The Core Sessions: Working Beneath the Sleeve

Once the sleeve has released over the first three sessions, the work goes inward. Sessions 4 through 7 are the core sessions, the second phase of the ten-series. What changes here is not only the tissue being worked with, but the nature of the session itself.

What the Core Is

The core is what lies inside the sleeve: the pelvic floor, the psoas, the viscera, the sacrum, the deep muscles of the neck. These are the structures that hold posture from within.

Four sessions are given to them.

  • Session 4: the lower body, from the adductors to the pelvic floor
  • Session 5: the front of the spine — the psoas, the viscera, the diaphragm
  • Session 6: the back of the spine — the shins, the glutes, the sacrum, the spine
  • Session 7: the shoulders, the neck, and the head
jintaizu_中心軸

The work enters at the surfaces that meet the floor, travels up the front of the body, comes back down the rear, and finishes at the neck and head. What gets threaded through those four sessions is the medial line.

Not a Place So Much as a Quality

The word core points at more than a location. In the training it was described as a quality of time — coordination and orientation, meaning how a movement is assembled and where it is heading. If the sleeve is the container, the core is what the container holds.

What Makes This Different

The sleeve is visible. You can look at someone and see where the pull is.

The core is not. It sits too deep to read by eye, and finding where things are caught takes longer.

There is a second difference, and it matters more. Going into the deep layers can bring stored feeling to the surface. Anyone who has practiced yoga for a while has seen it: a backbend opens the chest, and something that had been kept somewhere inside arrives all at once. That is the territory the core sessions are in.

Deep Tension Is Holding Something

Why does feeling surface? Because the tension was carrying it.

Whatever the body did in response to an overwhelming event stays in the tissue. That was the view taught in a workshop on bringing trauma work into bodywork. The tension is not left over; it is still doing its job. The deep layer stays firm so that whatever is being carried can be carried while life goes on.

So when the deep layer softens, what it was carrying comes into view. That is the order of things.

In practice, a few people each year stop coming at the point where the core sessions begin. Resistance to meeting your own interior is the only way to describe it — but resistance has its reasons too. What that tension has been protecting may still be needed. This is why nothing gets rushed, and why the amount and the pace are handled with care.

The Other Space — the Room Itself

Two kinds of space get made in a core session: the space inside the body, and the space of the session itself.

Maitland puts the second one first. The practitioner opens, and makes a fine-grained space in which change is possible. When that space is genuinely open, the client feels safe. And the process of recovery can begin without the practitioner doing anything at all.

The Rolf Movement training made the same point about its own container: psychological safety was treated as a condition of the course. Because challenge is permitted, individuality shows up. A core session needs the same thing. Unless it is understood that whatever comes up is allowed, the body does not open its depths.

This condition comes before technique.

Space Opening Inside

The second kind of space is the one within the body.

Deep muscle sits too far in to touch directly, and it cannot be trained in the ordinary sense. So the approach is different: attention goes there, and the working of the muscle is called back.

When space can be felt inside the body, the deep muscles begin to move toward it of their own accord. The more that inner space widens, the further attention travels inward, and the deeper the organization goes.

There is a word for this way of seeing it: articulation. It points at once to joints being able to move separately and to gaps opening up inside the body. Letting go is less a matter of going slack than of space appearing.

Going into the core also means going inward gradually, an onion peeled a layer at a time. The Japanese industrialist Kazuo Inamori describes the mind in a way that runs parallel: as concentric layers, with intellect on the outside, then sensibility, instinct, soul, and at the center what he calls the true self. To refine the mind, on that account, is to descend from the outer intellect toward the inside. The direction is the same.

Who Has the Answer

A useful image is the hand as a stethoscope. The hand explores the deep layer and finds where things are caught. Once the place is known, stimulus reaches it through the hand, and the response is waited for.

What matters is that the change comes from inside. Given the right stimulus, the body goes of its own accord to the place it senses as the one. The practitioner stays neutral and does nothing more than show the way.

The one who has the answer is not the practitioner but the client. It is in their body, and the work is to wait for it to arrive.

Even so, this process is not running between two people alone. What counts as healthy is decided by neither of them — by some third thing. The practitioner opens toward it, and at the same time helps the client connect to it. What that third thing is called depends on the tradition, but every tradition agrees that the relationship is not a pair.

Neutral, as a word, appears in my notes from the basic training in 2015. Back then it was borrowed from coaching and meant a frame of mind. Ten years later, in the advanced training, it arrived as a procedure for the body: where the practitioner places their own weight, where their attention sits. Neutral turned out to be less an attitude than a physical question.

A Line Through the Middle, and a Way of Deciding

What is four sessions of work on the medial line actually for?

With an axis in place, the amount of effort a situation calls for gets settled without your having to think about it — at work, at play, in company.

Without it, holding yourself upright takes deliberate energy, all day. Muscle cannot be allocated below the level of awareness, so much of what you have goes into standing and sitting.

When the neck takes on that job, holding the head costs you. Concentrating at a desk, reading and writing for any length of time, gets more expensive. In practice, people often report that their concentration lasts differently once posture settles.

And there is this. If you cannot judge from your own axis, you judge from someone else’s. What the medial line makes room for is the question of where you are going.

The Individual Sessions

Before and After


Hidefumi Otsuka, Ph.D. | Certified Advanced Rolfer™ / Rolf Movement® Practitioner Ph.D. from the Graduate School of Medicine, the University of Tokyo. After eleven years in medical marketing at a foreign pharmaceutical company, he has offered Rolfing® sessions in Shibuya, Tokyo since 2015, working under the theme of integrating science and practice.