Why We Freeze

When people look back on a frightening or traumatic experience, they often judge themselves by what they believe they should have done.

Why didn't I leave? Why didn't I fight back? Why didn't I say something? Why did I just stand there?

I've heard versions of these questions in my work with trauma survivors, and they can carry tremendous shame. Someone may replay an experience years later and imagine themselves pushing the person away, screaming, running for the door, or somehow stopping what was happening. Instead, they remember becoming very still. Perhaps they couldn't speak. Their mind went blank. Their body felt heavy or strangely disconnected. TSometimes they describe watching what was happening almost as though it were happening to someone else.

We tend to have an easier time understanding responses that involve action. Fighting back or getting away looks like self-protection. Freezing can look like the absence of a response, which makes it especially easy to misunderstand. Yet freezing is not a failure to respond to danger. It is one of the ways our bodies respond when we perceive that we are threatened and our options are limited.

What Happens When We Freeze?

Our nervous systems have developed several ways of responding to threat. Most of us learned about fight or flight somewhere along the way. When the brain detects danger, the body mobilizes. Heart rate increases, muscles prepare for movement, attention narrows, and energy becomes available so that we can either confront the danger or get away from it.

Fight and flight, however, are not our only survival responses. Researchers sometimes describe what happens in the face of danger as a defensive cascade, with different responses becoming more or less likely depending on how immediate the threat is, whether escape appears possible, and whether fighting is likely to help.

Freeze itself can take different forms. Sometimes there is a brief period of stillness accompanied by intense alertness. A person stops moving while taking in what is happening around them and preparing for what might come next. Under more extreme circumstances, particularly when the threat feels inescapable, a person can experience a much more profound involuntary immobility, sometimes called tonic immobility. Movement and speech may become very difficult or even feel impossible.

When someone says, “I froze,” they may be describing anything from a brief moment of stunned stillness to the frightening experience of feeling physically unable to move or speak.

These responses are not consciously chosen. In studies of tonic immobility, researchers describe an involuntary defensive response associated with extreme fear and the perception of being trapped. A person may be internally terrified and desperately want to move, while at the same time experiencing their body as unable to respond. That is very different from deciding not to resist.

Why Would the Body Do This?

At first, freezing can seem like a strange survival strategy. If you're in danger, wouldn't running or fighting make more sense?

Sometimes they do. If there is a clear route to safety, getting away may be the most useful response. If someone grabs you and you can successfully pull away or defend yourself, fighting back may protect you. But our responses to danger are shaped by the circumstances we are in, including how powerful the threat seems and whether there is any realistic possibility of escape.

Across species, immobility is an ancient survival response. In predator-prey situations, movement can attract attention or provoke further attack. Becoming immobile may make an animal less noticeable, decrease continued aggression, or occasionally create an opportunity for escape if the predator loosens its hold. Researchers studying tonic immobility have therefore understood it as an adaptive defensive response that has been preserved across species, including humans.

Human relationships are obviously much more complicated, but some of the same protective responses remain part of our biology.

Consider a child facing an enraged adult. Fighting isn't realistic. Leaving may not be possible, particularly when the frightening adult is also someone the child depends upon for food, shelter, care, and connection. The safest option may be to become still, draw as little attention as possible, and wait for the danger to pass.

Something similar can happen when an adult is physically overpowered during an assault.

Fighting back may increase the risk of injury, while escape may be impossible. In those circumstances, immobility can occur without the person consciously deciding to stop resisting.

Research has found tonic immobility particularly often in connection with interpersonal and sexual violence.

Years later, from a completely different place of safety and perspective, someone may wonder why they didn't fight harder or try to get away. What is easily forgotten is that their body was responding to the situation as it existed then, including the danger associated with resisting.

Fight, Flight, Freeze—and Fawn

We often talk about fight, flight, freeze, and fawn as though people each have one preferred trauma response. In reality, these responses can overlap, shift quickly, and look different depending on the situation.

Fight involves confronting the threat. It might include pushing someone away, yelling, arguing, becoming angry, or physically defending oneself. Flight involves creating distance from danger by running, leaving, hiding, avoiding, or finding another way to get away.

Freeze involves some degree of reduced movement. Sometimes it gives us a moment to stop and assess what is happening. Under overwhelming or inescapable threat, it can become much more pronounced, with a person feeling unable to move, speak, or act.

Fawn is a commonly used trauma term for trying to stay safe through appeasement. Someone may become agreeable, accommodating, or highly attuned to the needs and moods of the threatening person. Although “fawn” is widely used clinically and in popular trauma language, it isn't generally described in the research literature as a distinct biological defensive state in quite the same way as fight, flight, and forms of immobility.

Which response emerges depends a great deal on context. Fighting can be protective when a person has a reasonable chance of defending themselves, while the same behavior can increase danger when someone is physically overpowered or dependent upon the person threatening them. Leaving is useful when there is somewhere safe to go. Appeasement may develop in relationships where keeping another person calm has repeatedly reduced the likelihood of anger or violence. Freezing may occur when neither resistance nor escape feels possible.

It can be helpful to think less about which response is “healthy” and more about what was possible in that particular situation.

The Shame That Often Comes After Freeze

One of the most painful parts of the freeze response is the way people can interpret it afterward.

Once the immediate danger is over, they may look back with information, perspective, and options that simply weren't available to them at the time. It can seem obvious in retrospect that they could have yelled, left, pushed someone away, or asked for help. This can gradually turn into a belief that they somehow allowed the trauma to happen.

The problem with this kind of hindsight is that it removes the response from the conditions in which it occurred. Trauma happens in the presence of fear, uncertainty, power differences, overwhelm, and often very little time to think. A person who was trapped, terrified, dependent on someone, physically overpowered, or unsure of what would happen if they resisted was not making decisions from the same position they occupy when remembering the event months or years later.

This is particularly important when we are talking about sexual violence and other forms of interpersonal trauma. Not fighting is not the same as consenting. Being unable to speak is not permission. Becoming still does not mean that a person wanted what was happening. Even cooperating with someone who is frightening or threatening can be part of an attempt to reduce danger.

For some people, understanding freeze in this way can begin to loosen a long-held belief that they “did nothing.” Their body actually did respond. It simply responded through immobility rather than through the kind of visible action we usually associate with self-protection.

When a Survival Response Outlives the Danger

Recognizing the protective purpose of freeze doesn't mean that freezing always remains helpful.

Our nervous systems learn from experience. If becoming still, invisible, or disconnected repeatedly helped someone get through dangerous situations, that response may become easier to activate later. An adult may find themselves going blank during conflict, unable to speak when someone raises their voice, immobilized when they need to set a boundary, or disconnected from their body during intimacy.

What was protective in one environment can become limiting in another. Someone who once had very little power may now have considerably more ability to leave, speak up, ask for help, or decide that they no longer want to remain in a situation. Their body, however, may still react before they have time to recognize that the circumstances are different.

Research has also found an association between strong tonic immobility during trauma and greater PTSD symptom severity. That doesn't mean freezing causes PTSD, nor does it mean someone who froze is destined to remain traumatized. More recent research suggests that people with histories of tonic immobility can benefit from trauma-focused treatment and that changes in immobility responses can occur alongside improvements in trauma symptoms.

An important part of trauma therapy can therefore involve helping someone notice the difference between then and now. The goal isn't to convince the person that freezing was wrong or to train it out of them. It is to increase the number of choices that feel available in the present. Someone who once had no realistic way to leave may discover that they can leave now. Someone who learned that speaking was dangerous may gradually experience what it is like to have a voice and remain safe.

Looking Back at Freeze Differently

If you recognize yourself in this response, it may be useful to become curious about what was happening around you rather than immediately focusing on what you believe you should have done differently.

What were your actual options at the time? How powerful did the other person seem? Was there somewhere you could realistically go? What had happened previously when you resisted, disagreed, or tried to protect yourself? Were you dependent on the person who frightened you? Did becoming still, compliant, or less noticeable reduce the possibility of something worse happening?

Sometimes there will be answers to these questions, and sometimes there won't. Our defensive responses happen quickly, outside of deliberate thought, and we may never completely understand why the body responded in one way rather than another.

Understanding the protective function of freeze also doesn't require us to describe it as a positive experience. Being unable to move or speak during something terrifying can itself be deeply distressing. For some survivors, the memory of their own immobility becomes one of the most painful parts of the trauma.

Revisit the Moment With What You Know Now

If it feels manageable, choose a memory in which you remember freezing, going blank, becoming unusually still, or feeling unable to respond. You don't need to choose your most painful traumatic experience. Start with something that feels possible to think about without becoming overwhelmed.

Try to remember the situation as it actually was rather than as you believe it should have been.

How old were you? Who else was there? Who had more power in the situation? Were you physically able to leave? If you could have left, did you have somewhere safe to go? Were you dependent on the person in some way? Had you learned from previous experiences what might happen if you resisted, argued, said no, or tried to get away?

Now consider the responses you sometimes wish you had made. If you had fought back, what realistically might have happened? If you had tried to leave, what might have happened? If you had yelled or confronted the person, would that have made you safer—or might it have increased the danger?

Finally, come back to the response your body actually made. You may not know exactly why you froze, and you don't need to create an explanation that isn't there. But see whether you can consider the possibility that becoming still made sense given what your body understood about the situation at the time.

Notice whether anything changes when you look at the experience this way. You may still wish you had been able to respond differently. You may still feel anger, sadness, grief, or confusion about what happened. The purpose isn't to convince yourself that freezing was good. It is simply to look at your response within the reality of the circumstances you were facing.

Instead of seeing freeze as evidence that you were weak, passive, or somehow responsible for what happened, it becomes possible to understand it as a response that emerged when your body perceived very few safe choices. That doesn't change what happened. But it can change the way you understand the person you were when it happened—and perhaps allow a little more compassion for the ways you survived.

About the Author

Heidi J. Dalzell, PsyD, is a licensed clinical psychologist with more than 30 years of experience working with trauma, eating disorders, body image, and other complex mental health concerns. She is EMDR Certified and an EMDRIA Approved Consultant and incorporates EMDR, trauma-focused psychotherapy, and psychedelic-assisted approaches into her clinical work. Dr. Dalzell is the founder of Sedona Integrative Therapy and the author of Midlife Eating Disorders: Body Image, Trauma, and Recovery in Midlife. Her work emphasizes understanding trauma responses in the context in which they developed, while helping people build greater choice, connection, and self-understanding in the present.