Somatics

Completing What the Body Started: When Old Survival Responses Need New Endings

Profile illustration of Clayre Sessoms, RP, ATR-BC, an online therapist in Vancouver, Canada
Written by
Clayre Sessoms
 on
May 8, 2026
Person on a coastal bluff in BC | Therapy Blog | CSP
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Key Takeways

  • Defensive responses such as fight, flight, freeze, and cry-for-help can begin and not get to finish, leaving the body holding an impulse that's been waiting to complete.
  • Chronic bracing, jaw or shoulder tension, freezing in conflict, and unexplained flinches are often the trail of these unfinished responses, not signs that something's wrong with you.
  • In a body-based approach, the body finishes what it started in present time, with steady pacing and another person's nervous system alongside it, and the holding can ease.

Sometimes the body is still bracing for something that already ended. A door slams and your shoulders fly up. A certain tone of voice, even from someone you love, and your jaw locks. An email arrives and your stomach drops before you've read it. You can name what's happening now. You can trace it back to what happened then. Still, the body keeps moving as if the danger hasn't yet passed.

This comes up often in the work I do, both in our Vancouver-based practice and online across Canada. The people I see have usually done thoughtful work in therapy already. They understand the patterns. What they can't quite understand is why their body hasn't caught up.

When the body started something it didn't get to finish

When something feels dangerous, like a sudden noise, a threat, a sharp tone, the nervous system mobilizes faster than thought. Long before you decide what to do, your body has already started preparing. It holds a small library of survival responses, shaped by evolution, that exist to keep you alive: call out for help, push back, run, freeze, collapse. Each one is a sequence of muscle actions, breath shifts, and felt impulses, ready to fire.

What gets less attention, even among people who already know the language of fight, flight, and freeze, is what happens when one of those responses gets started but can't finish. The body wants to push, or run, or call out. The situation doesn't allow it. The person is too small. The exit is blocked. The cost of acting is too high. The impulse begins, and is held back. It doesn't go away. It stays in the muscle, in the breath pattern, in the posture the action wanted to begin.

The French psychologist Pierre Janet was already pointing to this in 1925. He described people whose traumatic memories left them unable to finish what their bodies had started. A century later, somatic approaches like Sensorimotor Psychotherapy online, a trademarked, body-first approach developed by Dr. Pat Ogden, work with the same principle. The defensive response that started long ago is still in there. The body isn't stuck because something's wrong with it. The body is stuck because it never got the ending it was reaching for.

What that can look like in everyday life

Truncated defensive responses don't announce themselves clearly. They get filed under other names. People come in describing themselves as too anxious, too sensitive, too shut down, too reactive, too quiet. The chronic tightness in the jaw, shoulders, or hands that arrives whenever you feel observed. The flinch you can't quite explain, in response to certain tones of voice, certain kinds of touch, certain rooms. The freeze in conflict where words don't come, even though, an hour later, you knew exactly what you wanted to say. The pull to leave that arrives without warning and feels disproportionate to the situation. The quiet far-away that takes over your body when a particular person walks in.

None of this means you're broken. It means a part of your body started something a long time ago, and has been waiting since then for someone to notice and help it finish. This is one of the kinder reframes that body-based work offers: your symptoms aren't malfunctions. They're unfinished sentences.

How a body-based approach helps the body finish what it started

The work itself is much slower and more careful than the description suggests. We don't act out the original event. We don't push past your nervous system's capacity. We work at the edge of what your body can hold while staying in present-time contact, together.

What that means in practice: I help you notice a small piece of what your body is doing right now. A tightening in the right arm. A shallowing of the breath. A subtle pulling-back in the spine. We don't interpret it. We follow it. Your body, given time and attention, often begins to show you what the impulse wanted to do.

Sometimes the action is small. A push of the palm against a pillow held by my hand. A turning of the head to look toward an exit. A sound the throat has been holding. The point isn't the size of the movement. The point is that your body, in present time, with steady company alongside it, gets to complete the action it couldn't complete before.

Peer-reviewed work in Frontiers in Psychology describes this process in terms of procedural memory. The body's survival imperative continues to operate as long as the response feels unfinished. When the action completes in present-moment awareness, with appropriate pacing, the procedural memory can settle. People often report feeling their body land afterwards. The shoulders lower. The breath deepens. The internal sense of urgency, the one that was driving the bracing, eases.

What this work actually looks like in session

A few honest things about pacing, in case it helps to know what to expect:

  • We start with what supports you, not with what hurts. Steadiness and the felt sense of being met come first. None of the completion work is rushed.
  • We work with small slices, not whole memories. A sliver of a situation, a single sensation, is enough to bring forward what your body is holding.
  • You stay in charge of what your body does. I don't push movements. I notice impulses, offer language for what I'm seeing, and stay with you.
  • Most sessions are quiet. A lot of the work happens in moments of slow attention, not dramatic action.
  • Completion isn't the same as fixing. It means the body has had a chance to finish a sentence it started long ago. What shifts after that is often subtle, often steady, and yours to discover.

A closing word

If something here is recognizable, know that the body's holding isn't a sign of weakness. It's a sign that something started, something that mattered enough for the body to keep holding it, until conditions allowed it to be met. There's no shame in carrying it. And you don't have to keep carrying it alone.

The body that's still bracing has been working hard for you. With the right pacing and the right kind of company, it can soften. Not all at once, and not on a schedule, but in its own time. We'll meet you there, when you're ready.

Frequently Asked Questions

Is this the same as fight, flight, and freeze?

Yes and no. Fight, flight, and freeze are some of the body's defensive responses. This work is about what happens when those responses begin and don't get to finish. The naming you may already know is the doorway. The slower work is following what the body's still holding underneath that name.

Do I have to remember the original event for this work to help?

No. Body-based work happens in the present, with what your body's doing now. Sometimes a memory comes forward on its own. Sometimes it doesn't. What we follow is the impulse and the sensation in real time. You don't have to bring a story for the body to be met.

Will I have to act out a trauma scene in session?

No. The work is slow and contained. We move with small impulses and small actions, often a few seconds at a time, with both of us tracking how it's landing in your nervous system. There's no re-enactment. We pay attention to what your body, today, is ready to finish.

How long does this kind of work take?

That depends on what your body's carrying and what kind of pacing serves you. Some pieces settle in a single session. Others ask for ongoing care. The body has its own timeline, and a steady relationship over time is often where the deeper completion happens.

Is this only for people with a PTSD diagnosis?

No. Many people who wouldn't be diagnosed with PTSD still carry truncated defensive responses, from old experiences, ongoing systemic stress, or relationships where it wasn't safe to react. If your body's bracing in ways that don't match your present life, this kind of work can help, regardless of diagnosis.

Profile illustration of Clayre Sessoms, RP, ATR-BC, an online therapist in Vancouver, Canada
author's bio
Clayre Sessoms

Clayre Sessoms (she/they) is a psychotherapist and art therapist whose work begins in presence: what's real, what's alive, and what needs care. Her approach is relational, experiential, and creative. As a white therapist, she's learned that power lives in the room whether named or not: in who offers care, in the history of harm, in the systems that shape us. She doesn't come as a fixer or an expert. She comes as a collaborator, a trans, disabled, and queer person committed to repair and building the trust needed for care to unfold.

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