Sadliwala BK (2021) reminds us that when survival is on the line, our typical playbook of fighting or fleeing might not be the only option available to the human body. We often picture dramatic escapes or fierce battles, but what happens when the threat is overwhelming, when the resources are simply gone, or when the stress is too much to process? In these moments, some people seem to hit a mental and physical pause - a kind of shutdown. This "freeze" response is a deeply ingrained survival mechanism, one that scientists are only beginning to fully map out.
What does the 'freeze' response actually do in a crisis?
When we talk about the freeze response, we are talking about the body's ancient, hardwired reaction to extreme danger that isn't quite a fight or a flight. Think of it like the ultimate system pause button. Our bodies are incredibly complex machines, and they have evolved strategies to keep us alive across millennia of environmental threats. The fight-or-flight model, popularized by researchers like Walter Cannon, suggests two main options: either you confront the danger (fight) or you run from it (flee). However, research shows that this binary choice is often too simple for the messy reality of human trauma. The freeze response is the third, often misunderstood, option. It's a state of temporary immobilization, a kind of physiological holding pattern.
From an immunological perspective, the body is constantly managing stress. Nehlsen-Cannarella et al. (1997) explored the physical side of stress, looking at how activity impacts the immune system, suggesting that physical exertion - whether fighting or fleeing - is a massive physiological undertaking. When the threat is too massive, or when the energy reserves are depleted, the body defaults to conservation mode. This isn't a sign of weakness; it's a highly efficient, if unsettling, survival tactic. The body essentially says, "We don't have enough energy for a full sprint or a brawl right now; we need to wait it out."
The context of mass displacement really highlights this. Kumar BN et al. (2022) examined the health needs of people fleeing conflict zones like Ukraine. Their work implicitly touches on the spectrum of survival responses. When people are dealing with chronic, overwhelming stress - the constant uncertainty of displacement - the body can become dysregulated. The freeze response can manifest as dissociation, numbness, or an inability to act, which are all ways the mind and body try to cope with an environment that offers no clear path to safety.
Furthermore, understanding trauma requires looking beyond just the immediate physical danger. Scheid JM (2024) discusses trauma-informed care, emphasizing that recognizing these varied responses - including freezing - is crucial for healing. If someone is frozen in a traumatic event, forcing them to "fight" or "flee" in a therapeutic setting can be re-traumatizing. The goal, therefore, is to understand the why behind the shutdown. It's the body's best guess at survival when the known options fail. The research suggests that these responses are adaptive, even if they feel paralyzing to us when we are safe and stable.
The concept of cultural understanding also plays a role in how we interpret these responses. Waldman A (2009) explored social dynamics, showing how perceptions of 'culture' or 'status' can lead to social exclusion. While this paper isn't directly about acute trauma, it speaks to how external social pressures can create environments where certain behaviors are deemed unacceptable, which mirrors how a freeze response might be misunderstood or pathologized by those who haven't experienced that level of sheer survival pressure.
In summary, the freeze response is not a failure of will; it is a sophisticated, energy-saving shutdown initiated by the nervous system when the perceived threat exceeds the body's immediate capacity to fight or flee. It is a testament to the incredible, sometimes baffling, resilience of the human biological programming.
What does the literature say about the link between stress, environment, and shutdown?
The literature strongly suggests that environmental stressors, particularly those involving resource scarcity or prolonged danger, push individuals into these non-action states. Sadliwala BK (2021) specifically addresses the nexus between famine and migration. In situations of mass starvation, the decision to move or stay is fraught with risk, and the body's resources are critically low. The sheer scale of the threat - the lack of food - can override the typical fight-or-flight calculus, leading to states of profound exhaustion and withdrawal, which aligns closely with the freeze response. The research highlights that the decision-making process itself becomes compromised by survival needs.
When we look at the broader picture of displacement, the cumulative effect of stress is immense. Kumar BN et al. (2022) provide a real-world example of this. People fleeing conflict zones are not just dealing with acute danger; they are dealing with prolonged uncertainty, loss of infrastructure, and constant threat assessment. This chronic stress keeps the body in a state of hyperarousal, but when resources dwindle, the system can crash into a freeze state as a protective measure. The need to meet basic health needs in these populations requires understanding that their behavioral responses are rooted in deep, unresolved survival stress.
Moreover, the understanding of trauma care itself is evolving to incorporate these non-action responses. Scheid JM (2024) advocates for trauma-informed practices precisely because of this spectrum of responses. If a therapist or aid worker only expects a verbal account of events, they might miss the person who is silent, who stares blankly, or who seems detached. These are all potential manifestations of the freeze response, and recognizing them is key to providing effective support. The goal shifts from "What happened?" to "What is your body doing right now?"
The systematic review response mentioned in the literature (2020) points toward the need for thorough understanding across different types of stressors. While the specific details of the review are broad, the implication for trauma research is clear: we need to move beyond single-event trauma models and account for chronic, pervasive stressors that force the body into adaptive, but seemingly inert, survival modes. The body is conserving energy, and that conservation can look like shutdown.
Finally, the intersection of physical activity and stress, as noted by Nehlsen-Cannarella et al. (1997), shows that the body is always calculating energy expenditure versus threat level. In a famine or a war zone, the calculation tips heavily toward conservation, making the freeze response a logical, albeit distressing, physiological outcome.
Practical Application: Responding to the Freeze
Understanding the freeze response is the first step; the next is developing actionable, physiological countermeasures. Since the freeze response is an involuntary, primal survival mechanism, "forcing" someone to fight or flee is often counterproductive and can increase distress. The goal of intervention is not to override the survival instinct, but to gently signal to the nervous system that the immediate danger has passed, allowing the parasympathetic system to gradually take over.
The Grounding Protocol (The 5-5-5 Technique)
This protocol is designed to rapidly engage the prefrontal cortex by demanding focused sensory processing, which can interrupt the amygdala's alarm signaling. It requires the individual to be in a relatively safe, contained environment where physical movement is possible but not necessary.
- Phase 1: Sensory Anchor (Initial 2 Minutes): Guide the person to focus intensely on five distinct things they can see (e.g., "Name five shades of blue you can spot in this room," or "Describe the texture of the wall to your left"). This requires cognitive load.
- Phase 2: Tactile Engagement (Next 3 Minutes): Direct attention to five things they can feel. This must involve varied textures or temperatures. Examples include: "Press your feet firmly into the floor and notice the pressure," or "Touch the fabric of your sleeve and describe its coolness." If possible, use an object with distinct textures (a smooth stone, rough wood).
- Phase 3: Auditory & Olfactory Reset (Final 3 Minutes): Focus on five things they can hear (distant traffic, the hum of electronics, their own breathing) and five things they can smell (a nearby soap, the scent of coffee, or simply the air). If a strong, safe scent is available (like peppermint oil), use it here.
Frequency and Duration: This full protocol should be administered when the freeze response is suspected but the threat level is assessed as low to moderate (i.e., not an immediate physical threat). It can be repeated every 15 to 30 minutes during prolonged periods of high stress or emotional overwhelm. The key is consistency and gentle repetition, not forceful execution. The goal is to build a pattern of safe sensory input that the body can begin to trust.
What Remains Uncertain
It is crucial to approach interventions for the freeze response with profound humility regarding the current state of trauma neuroscience. The mechanisms underlying the freeze response are deeply ingrained, evolutionarily hardwired survival circuits. Therefore, any protocol described here must be viewed as a supportive tool, not a guaranteed cure or override switch.
We must acknowledge significant unknowns. First, the specific triggers and manifestations of the freeze response vary wildly between individuals and even within the same person over time. What works for one person in a moment of acute panic may be completely ineffective or even triggering for another. Second, the role of co-regulation - the necessity of a calm, attuned caregiver - cannot be overstated. Interventions are significantly more effective when delivered by someone who is themselves regulated and grounded. Furthermore, the precise interplay between the vagus nerve, the sympathetic nervous system, and the cognitive functions during a freeze state remains an area requiring extensive, longitudinal research. We lack standardized, objective biomarkers to measure the degree of freezing or the efficacy of an intervention in real-time. Therefore, these protocols must always be adapted based on the individual's observable cues, recognizing that what appears to be "resistance" might actually be the body's last, desperate attempt to maintain equilibrium.
Core claims are supported by peer-reviewed research including systematic reviews.
References
- Sadliwala BK (2021). Fleeing mass starvation: what we (do not) know about the famine-migration nexus.. Disasters. DOI
- (2020). Supplemental Information 1: Systematic review response to meta-analysis. . DOI
- Waldman A (2009). Some Like It Haute: Why some people look down oh those less cultured. PsycEXTRA Dataset. DOI
- Nehlsen-Cannarella S, Fagoaga O, Folz J (1997). Fighting, fleeing and having fun: the immunology of physical activity.. International journal of sports medicine. DOI
- Kumar BN, James R, Hargreaves S (2022). Meeting the health needs of displaced people fleeing Ukraine: Drawing on existing technical guidance. The Lancet regional health. Europe. DOI
- Scheid JM (2024). Trauma Informed Best Practices and Resiliency.. Child and adolescent psychiatric clinics of North America. DOI
- Hussain S (2025). Which countries people are fleeing from - and why. . DOI
- Linge N (2025). Why it makes sense for BT to shut down its telephone network. . DOI
- (2023). Why are Ontario's Greenhouse Gas emissions going up instead of down?. Climate Change and Law Collection. DOI
- Dunlea M (2019). Working with Numbness, Shut-down, Freeze. BodyDreaming in the Treatment of Developmental Trauma. DOI