The colloid at the center of the body
Ida's chemistry was set in the 1910s. She took her PhD at Barnard in 1916 as a research chemist and went directly to the Rockefeller Institute, and the working vocabulary she carried for the rest of her life was the vocabulary of colloid chemistry — sols and gels, the addition and subtraction of energy, the chains and cross-links of protein molecules. When she stood in front of an advanced class in the 1970s, she did not reach for metaphors of relaxation or release. She reached for the kitchen demonstration every student already knew: a half-set pan of gelatin, returned to the stove, becomes fluid again. The body, she insisted, is governed by the same physics. The first move in understanding hydration is to understand that collagen — the protein of fascia, ligament, tendon, the wrappings of every organ — behaves like the gelatin in the pan. Its physical state is not fixed. It is a function of how much energy the substance currently holds.
"Add energy to it and it becomes more fluid, more sol. Subtract energy and it becomes more dense, more solid, a gel."
From the 1974 Healing Arts advanced class, Ida names the law in its simplest form.
What gives the doctrine its bite is what Ida does with it next. The gelatin in the pan is a closed demonstration; the body is not. The energy that shifts a body's collagen toward the sol state is not heat — at least not primarily — but pressure, applied at specific points, in specific directions, by the practitioner's fingers, knuckles, and elbow. The colloidal sentence is therefore also a job description. The practitioner is, in Ida's framing, an adder of energy to a colloidal protein. The body's response to that addition is a change of state. This is why she resisted reflex-point language and resisted nervous-system explanations of what was happening under the hands. Those frames belonged to other systems. The fascial system has its own physics, and the practitioner is operating inside it.
"All of this carries our message, the message of Rolfing. In fact, you see, by the addition of energy, change occurs in the structural material of the body. In other words, you can change relationships within that body by adding energy. Now, aside from the word relationships, the key in the last sentence was the word by the addition of energy. How do you add energy? Lots of ways you can add energy to a body. You can add it chemically in food, or in drink, or in some of these drugs are energy adding additives, not necessarily good ones, but they do add energy. Food is the outstanding good food is the outstanding adder of energy to a body. But there are other ways that you can change it. You can add it mechanically, and this is what the Rolfers do. They add it mechanically by pressure. The pressure may be of a finger, it may be of a knuckle, it may be of an elbow."
Continuing the same Healing Arts lecture, Ida walks the students from the chemistry to the practitioner's hand.
The water around the molecule
In the 1975 Boulder advanced class, Chuck Carpenter — one of the practitioners closest to Ida in her last working decade — pressed the colloidal doctrine to its molecular floor. The discussion turned on aging, on the cross-links between collagen strands, and on what the practitioner is doing when a stuck region softens. Chuck offered a picture Ida did not quite have available in the 1950s: not just the substitution of hydrogen for heavier minerals, but the geometry of water itself around the collagen molecule. When the tissue is hydrated, water packs around the protein in a specific arrangement that physically spans the molecules apart. When the tissue is dry, electrical forces collapse them together. The practitioner's pressure makes space; into that space, water flows; the molecules stand apart again.
"When the tissue is hydrated and has plenty of water, the water forms around the collagen molecule in three, four, five, or a pentagon arrangement. In other words, it spans the collagen molecules apart, pulls them apart from each other. When water is not in the tissue, they get close together."
Chuck explains the molecular geometry of hydration in the 1975 Boulder advanced class.
Chuck was careful not to claim he had the whole story. He suggested two complementary mechanisms — the substitution of lighter hydrogen cross-links for heavier mineral ones (Ida's older account) and the spanning effect of water around the molecule (his newer one) — and he was willing to say he did not know how they fit together. What he was certain of was the practitioner's experience: a place that was stuck warms, melts, and begins moving, and circulation is part of what makes that possible. The hydration story is therefore not a single mechanism but a set of nested ones: mineral substitution, water geometry, fluid inflow, and, at a grosser level, the reorganization of fiber bundles that had clumped together under chronic stress.
"The reason they get close together is electrical forces between each molecule. And as soon as they get at a certain point, those electrical forces get real strong on the level of those covalent bonds, real strong bonds. So I think when we're often, the circulation comes we get in there and mechanically say, spread that area so the circulation can come through. Water and whatever else comes in there, and probably hydrates those molecules and the tissue fluffs out. I don't think that's the whole story. I think that's one point."
Chuck continues, naming the role of circulation and the addition of energy to the colloid.
Jello, gelatin, and the demonstration in the kitchen
Ida returned to the gelatin demonstration so often across the advanced classes that her students sometimes finished the example for her. The reason was pedagogical: every adult in the room had handled gelatin and watched it flow and set. The demonstration carried a counterintuitive payload — the concentration of water in the jello does not change between sol and gel; only the energy state changes. The colloid is the same colloid, with the same water content, in two different physical states. Translated to the body, this means hydration is not simply a question of how much fluid is present. It is also a question of how that fluid is arranged, how much of it is structurally bound to the protein, and how much energy the system as a whole currently holds.
"Collagen is a colloid and as are all large molecules of protein molecules of protein. Colloids have certain qualities in common. An outstanding one is that by the addition of energy, they become more fluid, more resilient. You remember that half set pan of gelatin in water? And water, it's gelled. You set it back on the stove, you turn up the light, and lo and behold, it liquefies. You take it off the stove, you set it in the fridge, and lo and behold, it solidifies. These this is a generalized quality of colloids and it is a generalized quality of the connected connective tissue of the body. Add energy to it and it becomes more fluid, more sol."
Opening her 1974 Healing Arts lecture, Ida walks the students through the gelatin demonstration.
The kitchen demonstration also performs a subtler function in Ida's teaching. It places fascia inside ordinary physics. There is no metaphysics in the gelatin pan; there is no mystery about why heat liquefies it; there is no need for a special vitalist principle. Ida was working against two cultural currents at once — the medical dismissal of fascia as inert wrapping, and the New Age tendency to credit the changes to energies she could not name. By keeping the demonstration grossly ordinary, she insisted that what the practitioner does is physics. The colloidal property is real, measurable, and operative in every kitchen in the country. The body is just an unusually well-organized colloid.
"Like all body proteins, collagen is a colloid. It has a very high molecular weight. It is very complex. And it consists basically of three chains, protein chains, interlinked by mineral and hydrogen atoms. It is characteristic of all colloids that their physical state alters drastically by the addition of energy. You have experience of that right in the kitchen. You heat the colloidal aqueous suspension of jello, and it becomes clear what you think of as a solution, and it takes a chemist to see that it is a naceous sort of a thing that you realize, if you're a chemist, that it's not a true solution. It's a suspension. But at any rate, it flows, and it flows easily, And the chemist would say, it is in a sol state. And then you take it off the fire, and you put it into the refrigerator, and lo and behold, in very few minutes, you begin to get solids in the bottom. You begin to get a solid bottom, and presently it is solid throughout. And the chemist says, it is now in the gel state. And in his mind, he's going over the fact that you take energy away from the sol, and you get a gel. You add energy to the gel, and you get a sol. Now, listen to what that is saying to you. It is saying that if somebody can add energy to those colloids which have become much too much of a soul."
From the 1974 Open Universe class, Ida gives the chemistry-bench version of the same demonstration.
Fascia as a fluid system
If colloidal physics gives Ida her account of why pressure changes tissue, the broader doctrine of fascia as a fluid system gives her account of what circulates within it. In her 1973 Big Sur advanced class, she taught that the fascial matrix is not only a structural scaffold but a habitat — the medium in which cells other than the structural fibroblasts live, bathe, and respond to disturbance. This is the doctrine that lets the practitioner's work matter beyond the mechanical. If fluid moves along the fascial planes, and if those planes are unstuck by the work, then the cells living in that fluid have a different environment afterward. The matrix is not metaphor. It is the body's other circulatory system.
"Now in this matrix lives the cell itself bathes in the fluid and it is also in this matrix and I think it is here that there is tremendous amount of interest now in membrane research in the sense that the fluids of this tissue provide a medium for which other cells live other than the aquaponics tissue cell."
In the 1973 Big Sur advanced class, Ida names the matrix and the cells that live within it.
Ida treated this as a doctrinal point, not a speculative one. The cells that live in the fascial matrix — mast cells, the cells of the immune response, the cells that mediate the body's reaction to environmental stress — are not bystanders. They are why fascia matters beyond the structural argument. When the practitioner unsticks fascial planes, fluid moves, and the population of cells in that fluid has a different working environment. The structural change is real, but it is doubled by an environmental change for every cell that lives in the matrix. This is the part of her teaching that linked her work, in her own mind, to medicine — not as competition but as adjacency. The fluid system of fascia is, in her phrase, another way of organizing the body.
"matrix and it is these cells that are essential for the body's ability to respond to environmental stress and for the body's ability to respond and to heal itself."
Ida lands the doctrine: the cells in the matrix are essential to the body's healing capacity.
What the practitioner does, then, is not only mechanical. The mechanical move is what is available to the hands, but its effects propagate through a fluid medium that touches every cell in the body. In the next breath of the same class, Ida named the fascial system as a third communication network alongside the nervous and circulatory systems — a path along which ions and electrical charges travel. The doctrine of hydration is therefore not a doctrine about water alone. It is a doctrine about the medium in which information, immunity, and structure all share a substrate.
Fluid that has nowhere to go
The clearest demonstration of the fluid doctrine, in Ida's teaching, was the woman with edema in her legs. She referred to this case repeatedly across the 1973 Big Sur classes. The teaching point was structural: the practitioner had not added a diuretic, had not pressed on any specific point, had not done anything that would, in conventional medical language, mobilize fluid. What had happened was that the fascial planes — which had been stuck to one another — had been unstuck. Once they were unstuck, the fluid that had been pooling in the tissue had a path. The body's own mechanisms for clearing the fluid could engage. The lesson is that hydration is not only about getting water into tissue. It is also about giving fluid a place to go when it should not be where it is.
"There is a fluid system in the fascia and you see this, we had a woman yesterday, we had, where you have fluid collected in the legs. And you can literally see that once those fascial planes unstuck from each other, that fluid starts to leave and that the mechanisms that are there for the removal of that fluid can start to work."
From the same 1973 Big Sur lecture, Ida describes the woman with collected fluid in her legs.
Ida named the mechanism by which this happens 'extrinsic' — outside the central nervous system, outside the reflex arc that medicine was used to. Her point was not anti-medical. It was that the fascial system has its own physics for moving fluid, and that physics is what the practitioner is recruiting. The work does not order the body to drain; it removes the structural obstructions that were preventing the body's own pump from operating. The next sentence of the same lecture extended the point into a teaching about pattern — the practitioner needs to understand what the pattern looks like when it is doing the right thing, because the fascia is a changeable substance and can be changed for better or worse.
"It is through the fact that that happens. It is that extrinsic fuel to which it is outside the central nervous system. Well now, my understanding was a very good Now this is a message which I hope gets across except that you understand what the pattern is like when the pattern is doing the right thing."
Continuing the same lecture, Ida draws the moral: the practitioner must know what right looks like.
The fascial pump
By the 1975 Boulder class, Chuck Carpenter had assembled a specific anatomical extension of Ida's doctrine: fascia is not only the substrate within which fluids move but an active participant in moving them. The standard medical account credited the venous return to tonic flexion — the squeezing action of muscle contraction against blood vessels. Chuck and Ida argued, on the basis of a British anatomical study Chuck cited at length in the class, that this was only part of the story. The fascial planes themselves participate in the pumping. Without appropriate fascial structure, the muscular squeeze has no organized surface to work against, and the result is varicosity — fluid pooled in vessels that no longer have an external wall to support them.
"Okay? Like, here's the container. There's muscles in here. Okay? And as the muscles contract or shorten, they press against this container. It's one way to think about it. So they squeeze the blood vessels. Okay? Pump stuff up. Now here's an interesting thing. I'm we were talking the other day about varicose veins. Here's Yeah. Now go ahead. K. Here's the outer investing layer of the deep fascia. Okay? Here's the superficial fascia out here. There's veins that run from the deep to the outside, which is like the skin. K. These veins come along and they come through this outer investing layer of fascia, then they go out into here. K. Now in here, the size of the lumen, that's the diameter of the blood vessel, is reduced because the fascial system takes part of the pressure loading of the blood vessel. And now if this fascial system fails, in other words, collapses like the stocking becomes loose and soggy, these can no longer take the pressure loading. So they start swelling, and then you see them popping out on the leg. So in other"
Chuck explains the dual circulatory role of fascia in the 1975 Boulder advanced class.
Chuck was careful about the language. He did not want to displace tonic flexion; he wanted to add the fascial mechanism alongside it. The point of the addition was that the existing account was incomplete and, in cases of structural failure, misleading. A leg with varicose veins still has tonic flexion. What it lacks is the fascial wall that allows tonic flexion to pump rather than to randomize. The hydration story is therefore not only about water around the collagen molecule. At a grosser level, it is also about the organized fascial surfaces that allow fluid to move along the body's vertical lines rather than pooling in its low places.
"Now the other thing is is that the problem with the tonic flexion model is that it doesn't work without appropriate fascial structures. If the fascia breaks down in the leg and is not organized appropriately, the tonic flexion model just pumps it randomly. It's just like a broken fire hydrant. The water goes everywhere. And if the fascia is not in an appropriate situation, then that tiny flexion model doesn't work. That's what creates varicosity. You still have tiny flexion going on in the leg, But the venous system is broken down. And according to this guy, this whole article is about the circulatory system. It's not really about fascia. This guy was doing a dissection on over 30 people to find out to look and investigate varicosity and venous problems, Okay, circulatory problems. That's what this whole investigation is about. And what these doctors found out was when they got in there that the people who had these circulatory problems had inappropriate fascial planes. And the fascia wasn't supporting. See, the veins can't do the job if they don't have a wall around them to hold them. They're really not that strong by themselves. They depend on the support of this other system. They depend on the support of the the supporting system, which is fascia. But on the other hand, the wall of the vein is fascia. Again, you can no more separate this label of vein from fascia than you can separate the label of muscle from fascia. The reality, there's always fascia there."
Chuck restates the relationship: tonic flexion and fascia together — neither alone.
Membranes, joints, and the body's bursae
The fluid doctrine extends inward as well as upward. In the same Boulder class, the discussion turned to the synovial membranes and bursae — the small fluid-filled sacs at the body's joints. Chuck and Jim Asher worked the students through a striking observation: these sacs are not separate anatomical structures invented for the joint. They are folds in the fascia itself, originating from the same mesodermal layer, holding the same kind of viscous fluid that is found throughout the connective tissue. The body's joint lubrication is, in this account, continuous with its broader fluid system. When a joint dries up — when a bursa loses its filling — the membrane is permeable and can be refilled from the surrounding interstitial fluid, provided the fascia outside it has not collapsed and shut off the supply.
"Synovial membranes and bursas sacs, they're all called, are continuous parts of the fascia. They are part of and originate from the fascial plane and they all come from the mesoderm. So what they are in fact are just folds in the fascia and I've talked this over with several doctors and the fascia comes along and it just folds like that and then you and there that would be a bursa and the the only difference between synovial joint and a bursa joint it's a it's a joint in the fascia okay, that's why I'm calling it joint, it's not a bony joint, is that synovial one is a little longer. And inside here you have fluid, okay, this viscous fluid which means? Right, this fluid is considered connective tissue and what happens is that this is a lubricating agent for other joint and it's also in my mind a spacer. It creates space in between the joints. You don't have bone on bone or cartilage on cartilage. It prevents those things from rubbing and creating friction. It's a hydraulic substance. Now But you don't have that in the knee joint. You do. You have a joint. You have it up here."
Chuck describes the synovial membranes and bursae as continuous with the fascial system.
The teaching consequence is direct. A stiff joint is not, in this picture, simply a matter of worn cartilage or muscular guarding. It can also be a matter of a dried-up hydraulic sac whose refilling has been cut off by the tightening of the surrounding fascia. The practitioner who unsticks the fascial planes around the joint is not only freeing muscle attachments; they are restoring the conditions under which the joint's own lubrication can be re-established. Hydration, in this expanded sense, is a property of the whole body — not just the long sheets of fascia but the small pockets where fluid does its hydraulic work.
Why the body looks different afterward
The most ordinary observation in any session is that the tissue under the practitioner's hands warms, and what had felt stuck begins to move. The 1974 Open Universe class spent a session unpacking what this warming actually is. The hypothesis offered by the practitioners in the room — and accepted by Ida as consistent with the colloidal doctrine — was that there is a hardened fluid substance between the fascial layers that has not been reabsorbed since the time of an injury or illness, and that the practitioner's pressure is what allows reabsorption to occur. The state change is local, immediate, and observable to the practitioner's hand.
"Again, we're interested in gravity falling falling through this body in such a way that it's doing a lot of the work. Can you say again what you're doing between the layers and muscles physiologically? You know, all I know is what I experienced and that is that oftentimes there's a warming, like a melting feeling that the place that was stuck or the place that wasn't moving, all of a sudden it gets warm and starts moving. That's my point. You're moving something. They get stuck partially by hardening or there's a fluid substance that seems like that has been hardened and isn't reabsorbed in the flesh. Time of injury, time of sickness. And it seems like whatever it is that is that stuckness between the layers of the fascia is what's reabsorbed at the time when our pressure is or energy is is placed on the body. And I don't know what further to say except that that's the way I feel what's going on. And, of course, the development of that stress pattern or of those places that are immobilized and hardened, we think is primarily related to the way the body deals with gravity because gravity is the most constant environmental force for the human body. And so it's in response to gravity that the body avoids pain, you might say, or avoids the buildup of stress in an individual point by trying to distribute it."
From the 1974 Open Universe class, a practitioner describes what melting feels like under the hands.
Ida was willing to accept this account so long as it did not collapse into vague energetic talk. The warming is real; the melting is real; what is happening is that a substance in a more solid state is moving toward a more fluid state under the influence of added energy. The colloidal doctrine predicts exactly this. Where Ida resisted was the inflation of the observation into a claim about mystery. The melting is ordinary physics applied to an unfamiliar substrate. The unfamiliarity is the student's, not the universe's.
"There's sensations that I have never felt before that I feel, and and it's localized. They vary. Chase more. Okay. It's it it it begins in one small area and expands. It's it's almost like well, it is it's vibrations, wavelengths, or expanding. Like energy going? Energy. See, that's what we want to find out is the relationship between this soft tissue change and the change in the energy field. Now lift both your arms up. So you can see now that the rib cage works as one and it's got an undulating movement to it as it breathes. Okay. Bring your arms back down. Take your legs down, one at each hand. Rock them back and forth this way. Again, here we're watching for the movement, the differences in movement from the two sides."
Later in the same Open Universe session, a student-practitioner describes vibrating, expanding sensations on the table.
Stored energy and the release of tension
In the 1975 Boulder advanced class, Michael Salveson — referenced through a colleague's recollection — offered a complementary doctrine. Fascia that is held in tension is fascia that is holding stored energy. The practitioner's job is to release that stored energy back into the body. The energy in question is not metaphysical. It is the physical alignment of molecules along stress lines. Changing their alignment changes the tissue, and the change propagates. This framing sits comfortably alongside the colloidal account: the addition of energy by pressure produces a state change, the state change releases previously stored alignment, and the alignment of the whole body shifts.
"Well yesterday someone, I don't know who said it to me, it's Michael Salison's concept of the fascial tube which starts in the cervicals and goes in the second hour when you start working on the ankles you're heading vertically again. Know that each horizontal that you bring out down below reflects itself upward as we saw in Takashi yesterday where he's working on his leg and you can see his rib cage absorbing the change. I mean this, when the tissue is in tension, that's stored energy that you release into the body. And its energy is not a metaphysical something. These molecules are aligned in a particular way. You change their alignment. The change spreads."
From the 1975 Boulder advanced class, a practitioner reports Salveson's concept of stored energy in tense tissue.
What is striking about this framing is its parsimony. There is no need to invoke a separate energetic system. The collagen molecules are aligned in a specific way; the alignment holds potential energy; rearranging the molecules releases the energy as a physical change in tissue state. This is hydration in its most general form — not a question of water content but a question of molecular configuration. The water around the collagen is part of the configuration. When the configuration changes, the water relocates, and the tissue both feels and behaves differently.
Connective tissue as the body's chemistry lab
In the opening of the 1975 Boulder advanced class, Chuck and a colleague named Bob took the students through a more formal exposition of connective tissue: its cellular composition, its three fiber types, and its intercellular medium — the ground substance through which osmosis and nutrition pass on their way to every cell in the body. The framing was deliberate. If the connective tissue surrounds every cell, and if its intercellular medium is the route through which nutrients reach and metabolic products leave, then the state of that medium — its hydration, its viscosity, its plasticity — is not a structural curiosity. It is a determinant of the body's chemistry.
"The connective tissue is composed of cells, The most important point of the cells, I think, is all the cells come from embryonic measurement iron, and that can differentiate in drug cells such as the fibroblast, the mast cells, and any other cells that's in there. The brown substance is like the lab of the body. Like a whole chemistry lab. I've got a little thing I want to read about that. The intercellular medium of connective tissue surrounds virtually every cell in the body. This system is the medium through which the osmotic process and nutrition elimination takes place. Metabolic products are transferred between the cells and capillaries, so that surrounds through to every cell in the body. So what's coming through there is influenced by that barrier. I have another general statement on connective tissue. Connective tissue is a major stabilizing organ of the body. Disturbances in this basic tissue affect mechanical functioning, physiology, and therefore the emotional stability of an individual. This tissue appears to record the history of trauma along with the passage of time by its position, plasticity, texture. And that's what we're feeling. There's something that you might well have brought out at that point, and you haven't."
Chuck and a colleague open the 1975 Boulder advanced class with the cellular and chemical anatomy of connective tissue.
Ida pressed at this point in the discussion. She wanted the students to name what happens when connective tissue is diseased — when the colloid itself goes wrong. The connective-tissue diseases, of which arthritis is the most familiar, are a clinical population the practitioner will meet. They are also a confirmation of the doctrine: when collagen's structure or hydration is pathologically altered, function fails. The healthy state Ida was working toward is therefore not a wellness ideal. It is the negative image of a well-known pathology — a colloid in its appropriate sol-gel balance, in its appropriate fluid environment, supporting a body that can move.
The matrix and the most primitive cell
Underneath the colloidal doctrine sits an embryological one. In the same Big Sur 1973 class where she described the matrix as habitat, Ida walked the students back to the mesoderm — the embryonic layer from which all of the body's connective tissue derives. Her point was that the fascial cell is the least differentiated of the mesodermal derivatives. It has not had to commit to becoming bone or muscle or cartilage. It retains the freedom of an undifferentiated cell, and with that freedom comes greater potential energy and greater capacity for change. This is the developmental ground for the entire teaching on plasticity. The fascia is changeable because the cell that makes it has remained open.
"Now as these cells become more and more specialized and as the embryo develops, there is one cell which stops at a certain level of differentiation and just becomes faster. Fracture is the connective And this is significant that fascia, the connective tissue cells are the least differentiated and I am not speaking here about the extruded collagen fibers, I am speaking about these basic cells that generate the fibers. Because you have to remember that fascia is a matrix of connective tissue fibers called collagenous fibers along protein strands in which live the cells of the connective tissue. And it is these cells that generate fascia. So the And fascia is formed from the least differentiated cell. In that sense it is the most primitive and also the most labile because it hasn't gone as far down the road for specialization. It stopped before it has had to make all these decisions about is it going to be bone, is it going to be muscle, is it going to be And it stays right there. And hence it has greater ability, has greater freedom, freedom, it has, in a way to look at it, has greater potential energy. So we have a cell which is capable of generating this fibrous matrix."
From the 1973 Big Sur advanced class, Ida traces the fascial cell back to its embryonic origin.
This developmental framing matters because it places hydration in a long story. The fluid environment of the fascia is not a late-stage feature of an adult body; it is a continuation of the embryonic environment in which the mesodermal cells first developed under the influence of stretch, pressure, and other mechanical demands. The adult fascia is the surviving expression of those embryonic demands. When the practitioner adds energy to the colloid, what is being affected is a tissue that has carried its plasticity forward from its earliest formation.
Diamonds, fiber arrangement, and the plastic surface
At the same Boulder 1975 class, Chuck took the students into the geometry of how fascial sheets change shape. The collagen fibers, he argued, are not laid down in parallel like a woven cloth but in a crisscrossed diamond pattern that allows the sheet to extend in two directions when pulled in one. The diamonds open and close. When the sheet wraps a leg or an arm into a cylinder, the same geometry allows the cylinder to change volume. This is the structural explanation for how fascia can be both strong and pliable — how it can hold the shape of the body and also accommodate the constant change of movement and breathing.
"If you back off from that irregular range tissue, the first picture, take a broader view of it, you start seeing a fiber arrangement that looks like this in two dimensions now. In other words, a crisscross type of arrangement. Now why would the body have that? Now if you take just take one of these little crisscrosses right here, it's a diamond shape. Okay. Now since this tissue has to have some plasticity, it's not solid like cement. It moves like when you move your leg, the fascial planes change shape. Okay? So what type of fiber arrangement does there have to be for that to happen? Well, here it is."
Chuck explains the diamond arrangement of collagen fibers in the 1975 Boulder class.
The diamond geometry is hydration's mechanical partner. The fluid that fills the spaces between the fibers — the ground substance, the interstitial water, the structurally bound water around each molecule — has somewhere to be because the fibers are not packed solid. When the diamonds open, the fluid spaces enlarge. When the diamonds close, the spaces compress and the fluid moves. The colloidal state change at the molecular level and the diamond reconfiguration at the fiber level are two scales of the same event. Together they explain why pressure applied at the right point in the right direction can produce, almost immediately, a tissue that feels different to the hand and to its owner.
Two layers, one continuous tissue
Jim Asher's slide-by-slide commentary in the 1976 Boulder advanced class gave the students a more anatomical view of the same picture. Working through dissection images of a 43-year-old male cadaver, he traced the layers — skin, superficial fascia, deep fascia immediately over the muscle — and named the transition between them. The superficial fascia has an outer adipose layer that contributes to body contour and stores nutrients, and an inner membranous layer with significant elastic content that allows the superficial fascia to slide over the deep fascia underneath. Between and within these layers is the fluid environment that the colloidal doctrine names: the medium in which the structural and the fluid stories are the same story.
"And then we're down to the fascia that is immediately over the muscle itself which we call the deep fascia or I started to call the deep, the superficial deep fascia which is something we have to do about terms. So it's really in a sense a cross section of the skin, the kinds of things that we're working through. Okay? Now these few slides are mainly to give you an idea of different kinds of fascia and that we have layers of fascia or fascia sheaths which I feel are due to the concept is the tough sheaths are due to improper use of the body. In other words, I think what we're looking toward as the ultimate is a really relatively soft bed of connective tissue rather than these tough sheets that are found between the different muscle layers and I feel that that's again one of the things that we're trying to do in terms of embryological aspect. But at any rate, you can see the third dimensional concept of one sort of thin or transparent group of fibers going this way, another one going this way and over here a little piece of fat which we must remember is also connective tissue and therefore fascia if we're going to use the term. You can see that there's a difference between here and here. This is more of a glistening, you can't even see the fibers over here."
In the 1976 Boulder advanced class, Jim Asher walks the students through the layered architecture of fascia.
Jim's contribution to the hydration teaching is to insist that softness is the healthy state. The tough sheets are not a virtue. They are an accumulated record of stress, of injury, of stuck patterns. The aim of the practitioner is to return the bed of connective tissue to something more like its developmentally appropriate state — a soft, fluid-rich matrix in which the layers can slide on one another and the muscles can do their differentiated work. The colloidal doctrine, the fluid-system doctrine, and Jim's anatomical account converge on the same picture: tissue that has been worked is tissue that has been returned to a state closer to the one in which it was originally formed.
"My preference now and I don't always do it because I've got to change my head on this is I prefer to call it connective tissue. I think we're in a lot less trouble if we do it. The problem is that first of all every organ has its fascia so we would have to say myofascial. We tend it from an eye tendon. When I talked about fascia is to think of the wrapping around muscle. Then I realized fascia is fascia around all the glands, there's fascia around all the organs and so forth. The myofascial I think is like a part of the fascia and as long as we consider it as only part that we're affecting more than that, that we are affecting as you've started to say, we are affecting the glandular system and it may be, it's easy to say that a beginning effect can be by affecting its fascia and affecting its circulation because indeed we have all the blood vessels in the fascia or in the connective tissue. So at this point I'm preferring to say connective tissue and then talk about the fascia, the myofascia as one part of it and I don't always get there."
From the same 1976 class, Jim argues for the term 'connective tissue' over 'fascia.'
Aging, mineral substitution, and the morning stiffness
The colloidal account also gave Ida her position on aging. The molecules that hold the three collagen chains together — the mineral atoms at the cross-links — can be exchanged. In younger tissue, the cross-links are predominantly hydrogen, sometimes sodium; in older tissue, calcium accumulates. Calcium cross-links are stronger and stiffer than hydrogen ones. The morning stiffness, the tired joints, the slowness to stretch — these are, in Ida's chemistry, expressions of mineral substitution in the collagen colloid, not of time itself. The state can be reversed in principle by the addition of energy. This was her position against the medical orthodoxy that treated aging as a one-way street.
"now in the gel state. And in his mind, he's going over the fact that you take energy away from the sol, and you get a gel. You add energy to the gel, and you get a sol. Now, listen to what that is saying to you. It is saying that if somebody can add energy to those colloids which have become much too much of a soul. Oh, how I hate to get up in the morning, my back bothers me, I can't straighten up, I go around so slowly, I must be getting old. Well, the next time you want to try that song, try it to a different tune. Try telling yourself that that colloidal material, which is you, has not had enough energy added to it. See whether it changes your attitude. It might. Now, this kind of energy change permits chemical changes in the molecule, the molecule of that big collagen colloid. It allows chemical changes to occur. Those mineral atoms, or hydrogen atoms, that hold these three chains together can and do change. Minerals can be substituted for hydrogen. Hydrogen can be substituted for minerals. The more minerals are substituted in there, particularly calcium, the more tired you are when you get up in the morning and can't stretch out."
From the 1974 Open Universe class, Ida names the morning-stiffness experience and reframes it.
The reframing matters because it preserves the agency of the work. If aging is mineral substitution in a colloid, and if the addition of mechanical energy can shift the substitution, then the practitioner has a structural-chemical claim to make on the body's apparent decline. The claim is not that Structural Integration reverses aging; Ida was careful about that line. The claim is that some of what is called aging is the gradual desiccation and mineralization of a colloid that need not stay desiccated and mineralized. The hydration story is, at this level, a story about what kind of body the practitioner can keep available.
"And if they go out and tie a drunk on the night they've been roughed, they come back in the next day and they don't look so good for the next session. So there's like a whole and what I'm seeing that translates to is that these all this tissue needs time to sort of bring itself around to start supporting the new order. I'd like to talk about aging for a minute. The difference between the guy when he gets drunk and right after he got drunk. The two theories on the main theory on aging is that these in beneath in between these molecules, there's numerous cross links, and there's hydrogen ones and heavier metal cross links. Possibly with Rolf, we replace the heavier ones with hydrogen ones, which are lighter and not so strong. The stronger bonds make the tissue more, you know, like stiff knees. And elastic. The thing that most of the articles don't bring out, there's another way to cause that with not messing with the cross links."
Chuck and Ida discuss the cross-link substitution theory of aging in the 1975 Boulder class.
The plastic medium
Ida's umbrella term for everything in this teaching was that the body is a plastic medium. By dictionary definition, a plastic substance is one that can be distorted by pressure and then, by suitable means, returned to shape, provided its elasticity has not been exceeded. The hydration doctrine is what gives this definition its physical content. The body's plasticity is the plasticity of a colloid whose state depends on the energy it holds. The fluid system that runs along its fascial planes is what allows the new state to settle and be maintained. The mesodermal origin of the tissue is what allowed the plasticity to exist in the first place. Hydration is therefore not one teaching among many; it is the physical mechanism behind the central doctrine of the work.
"These three strands are connected by various inorganic hydrogen sometimes, sodium sometimes, calcium sometimes, and undoubtedly other minerals. These minerals are interchangeable within limits. Thus, as the body grows older and stiffer, undoubtedly a larger percentage of calcium and a smaller percentage of sodium are present in these bonds. But by the addition of energy and what is energy? In this come in this context, it can it is the pressure of the fingers or the elbow of the ralpha. This ratio may be varied by the addition of this energy, and the joint or the connective tissue becomes more resilient, more flexible."
From the 1974 Healing Arts class, Ida names the role of mineral substitution and energy in the plastic medium.
What the practitioner is doing, at every scale of the doctrine, is the same operation. At the molecular scale, water is being restored to its spanning geometry around the collagen molecule. At the fiber scale, diamonds of collagen are reopening. At the sheet scale, fascial planes are unsticking from one another. At the fluid scale, interstitial and venous flow is being restored. At the chemical scale, lighter cross-links are substituting for heavier ones. At the cellular scale, the cells living in the matrix are getting a different environment. And at the structural scale, the segments of the body are being returned to a relationship in which gravity can support rather than disorganize them. Hydration is what links all of these scales into a single account.
"And he cannot attain this desire until the day comes when he creates new muscular patterns or more muscular patterns and the greater muscular stress evokes an answer from the body And then by that he's got the mechanism that he needs to give him the greatest strength. And the whole history of growth is a history any living human being by putting it into bed and keeping it. Now I realized I am talking about like to have, there is a level of abstraction which is essentially identical when you talk about protein molecules. Out here, from the hip, from the hip, except here. And what we are doing is evolving toward the place where when you look straight down on the top of the head, you see nothing except perhaps the tip of the middle. Scrapbooking and look at the way an animal on all fours can utilize scrapbooking. So the tension of the movement of that energy through the organism is You see, Marisol, actually when you're saying something else,"
From the 1973 Big Sur advanced class, Ida grounds the plasticity doctrine in protein chemistry.
Coda: what hydration means in a session
By the end of the 1970s, the hydration teaching had a settled shape. The practitioner adds energy to a colloidal tissue, and the tissue undergoes a state change toward sol. Water rearranges around the collagen molecule. Fascial planes unstick from one another, and the fluid that had been trapped between them moves. Cells living in the matrix get a different environment. Cross-links may shift toward lighter mineral substitutions. Joint sacs, refilled from the surrounding interstitial fluid, regain their hydraulic function. The body that gets up from the table is not only more aligned. It is more wet, in a specific and useful sense — wet in the molecular spaces where water belongs, dry in the tissue spaces where it had been pooling, and free to move fluid along the fascial planes that organize its structure.
"Sheaths doesn't be doing damage or does disintegration. Breaking up is a bad word. I don't think it is a great step. I don't experience it that way. But whatever it is that we do, no. There's no reformation of scar tissue, for example. And the effect is obvious, both to touch and to watch and to see, that it's an improved function Is he gonna be stiff tomorrow? He'll have a little bit of tenderness in spots, some of which will be like using different muscles and muscles in a different way like after a tennis game after three months off. Not as bad as that number."
From the 1974 Open Universe class, a practitioner answers a question about whether breaking up fascial sheaths does damage.
Ida sometimes ended her advanced-class discussions of the colloid with a wry note about how to talk to oneself in the morning. The next time you find yourself complaining about getting old, she would say, try telling yourself instead that your colloidal material has not had enough energy added to it. The phrasing is half a joke and half the doctrine in plain language. Hydration is energy state; energy state is what changes under the practitioner's pressure; the morning stiffness is a colloid in the wrong place. The work is to put energy back into it. The body, as the lecture closes in nearly every advanced class, is a plastic medium. It is also, in the specific physical sense that runs through everything she taught, a wet one.
See also: See also: Ida Rolf, RolfA5 public tape (RolfA5Side2) — an open-ended reflection on the absence of a worked-out map of fascial patterns and the educational task that remains; included as a pointer for readers interested in the gap between the hydration doctrine and the anatomical vocabulary still being assembled in the 1970s. RolfA5Side2 ▸
See also: See also: 1974 Open Universe class (UNI_044) — Valerie's discussion of structural patterning and the practitioner's training in anatomy, which provides background on how the colloidal doctrine was translated into clinical practice. UNI_044 ▸
See also: See also: 1976 Boulder advanced class (76ADV21) — Jim Asher's extended discussion of the wedge of connective tissue at the iliac crest and the contour of the body as determined by connective tissue rather than muscle, a related extension of the hydration and fluid-system teachings. 76ADV21 ▸