What Is Sensory Motor Amnesia and Why Your Muscles Are Tight Even After Stretching

I used to start most mornings the same way. Roll out of bed, feel that familiar grip of tightness through my hips and low back, and head straight for the floor. Drop into a half-kneeling hip flexor stretch. Hold it for thirty seconds. Switch sides. Maybe grab the foam roller and work through it a little. Feel a little better, get on with the day, and be right back to square one by mid-morning.

So I'd stretch again. Same result.

I have spondylolisthesis, which means one of my lumbar vertebrae has slipped forward on the one below it. My low back has quite a bit of curve to it because of that, and my hip flexors were in a near-constant state of contraction to compensate. Mornings were the worst, but honestly, it wasn't just mornings. It was after sitting for too long, after a walk, after pretty much anything. The tightness was just always there, waiting to remind me it hadn't gone anywhere.

As a physical therapist, I knew exactly what the research said about stretching. I knew how muscles were supposed to work. I understood the mechanics. So why wasn't anything changing? Why did I keep doing all the right things and keep ending up in the same place?

That question nagged at me for a long time. And when I finally found the answer, it didn't just help my hips. It changed how I understood the body completely.

The problem was never my hip flexors. It was what my nervous system had learned over years of compensation and guarding, and what it had never been asked to unlearn.

There's a term for this: Sensory Motor Amnesia. It was coined by a somatic philosopher and educator named Thomas Hanna, who spent decades studying how the nervous system controls movement and posture. The name sounds clinical, but the idea behind it is actually pretty straightforward once you hear it.

Here's what happens. When your nervous system holds a muscle in contraction for long enough, it eventually starts to lose the ability to fully let go. The feedback loop between your brain and that muscle goes quiet. The holding pattern becomes so familiar that the brain starts treating it as normal, as the baseline. And at a certain point, your brain can no longer fully sense or voluntarily control that muscle the way it once could.

It's a communication problem, not a structural one. The muscle isn't damaged. The joint isn't worn out. The signal between your brain and your body has just gotten fuzzy, and the muscle is stuck doing the only thing it knows how to do, which is hold on.

And here's the part that most people, including a lot of practitioners, never hear: no amount of pulling on that muscle is going to fix a communication problem. You can stretch for years and get the same hour of relief every single time, because the nervous system keeps running the same pattern that created the tightness in the first place. You're treating the symptom. The pattern is still running in the background.

When I finally understood this, so much clicked into place. It wasn't that I hadn't been trying hard enough or doing the right stretches. It was that I was working on the wrong level entirely.

So if stretching doesn't solve it, what does?

This is where it gets interesting. And honestly, the answer was right in front of me the whole time. I just hadn't recognized it for what it was.

Have you ever watched a dog or cat wake up from a nap? Before they do anything else, before they even think about walking across the room, they sink into this slow, luxurious, whole-body movement. The back arches, the legs extend, everything kind of lengthens and then releases. It looks like a stretch, but it's actually something different. Something more deliberate. They do it every single time they get up, completely on instinct.

That's called pandiculation. And it turns out it's the nervous system doing exactly what it's designed to do, resetting muscle length and restoring the brain's ability to sense and control that muscle after a period of rest. Animals never skip it. They don't have to think about it. It's built in.

We do it too, actually. That full body stretch and groan you do when you first wake up in the morning? That's pandiculation. The problem is we do it once and then we're done. We don't do it intentionally, we don't do it throughout the day, and most of us have no idea that it's one of the most powerful tools the nervous system has for resetting itself.

Clinical Somatics is built on this principle. And pandiculation, done consciously and deliberately, is the foundation of the whole approach.

Here's how it works. There are three parts to it. The first part is that you voluntarily contract into the tight muscle. You actually make the tension stronger, on purpose, for just a moment. This might sound counterintuitive, but that deliberate contraction sends a very clear signal to the brain: pay attention to this muscle. It wakes up the feedback loop. The second part is a slow, intentional release. Not a drop, not a collapse, but a gradual letting go where you stay in control the whole way down. This is where the nervous system gets the chance to reset the resting length of that muscle. No forcing, no pushing through discomfort. Just a slow, steady release that you're guiding the entire time. The third part is a full, relaxing breath and a complete letting go, which gives the brain the time it needs to integrate what just happened.

Contract, slow release, full breath. That's it.

What makes this so different from anything else is that you're not trying to override the nervous system or force the muscle to change. You're giving the brain the sensory experience it needs to actually update the pattern. You're working with the system rather than against it. And because the brain is the one driving the change, the results don't wear off after an hour. They accumulate. The pattern genuinely starts to shift.

When I started applying this to my own hip flexors, it was a different experience than anything I'd tried before. The tightness didn't just release for a little while. The mornings started to change. Slowly, and then more noticeably. The baseline started to move in a way that stretching had never been able to touch.

That's when I knew this was what had been missing.

This is what Clinical Somatics is built on: not chasing symptoms, not trying one thing and then another and then another, but going to the actual root of why the muscles are tight and giving the nervous system a real path back to free, easy movement.

The people I work with aren't looking to be managed or maintained by someone else. They want to understand what's happening in their own body well enough to actually do something about it. They want a skill they can use for the rest of their life, not a treatment they have to keep coming back for. That's the whole point. That's what makes this different.

If you've been stuck in the same loop of tightness, a little relief, and tightness again, you're not broken and you haven't failed. Your nervous system is just waiting for the right kind of signal. It's waiting to be shown that it's safe to let go. Pandiculation is that signal. And once you learn how to use it, you have it forever. No appointment needed.

If you're curious about where to start, I'd love to help you figure that out.