Trauma changes your nervous system in measurable ways, and reversing those changes requires working with the body, not just the mind. When a threatening experience overwhelms your capacity to cope, the stress response that helped you survive can get stuck in an “on” position, keeping your body braced for danger long after the danger has passed. Releasing that stored activation involves retraining your nervous system to recognize safety, and there are several well-studied approaches that do exactly that.
How Trauma Gets Stuck in Your Body
Your brain responds to threat through a stress system that links the hypothalamus, pituitary gland, and adrenal glands. Under normal stress, this system ramps up cortisol and adrenaline, then settles back to baseline once the threat passes. With trauma, especially repeated or prolonged trauma, the neurochemical changes that were initially protective outlive the threat itself. The hyperarousal state continues even when the stressor has dissipated, creating a maladaptive feedback loop that disrupts your body’s equilibrium.
Over time, this sustained activation establishes a new set point. Your nervous system recalibrates around threat rather than safety. Chronically stressed individuals often show reduced morning cortisol, likely a protective downregulation to avoid overexposure to stress hormones. The brain physically changes too: the amygdala, your threat-detection center, can enlarge, while the hippocampus (involved in memory processing) and prefrontal cortex (involved in rational decision-making and emotional regulation) shrink in volume. These changes have been documented in brain imaging studies of people with PTSD and histories of childhood adversity.
This is why trauma isn’t just a psychological experience. It’s a physiological state. Your muscles hold tension, your breathing stays shallow, your startle response fires too easily. Releasing trauma means addressing these physical patterns directly.
Your Nervous System’s Three Modes
Polyvagal theory, developed by neuroscientist Stephen Porges, describes three states your autonomic nervous system cycles through in a specific hierarchy. When you feel safe, you operate from the ventral vagal state, sometimes called the social engagement system. This is where you can connect with others, think clearly, and feel calm. When you sense danger, your system shifts into sympathetic activation: the fight-or-flight response that mobilizes energy for survival. If the threat is too overwhelming to fight or flee from, your system drops into dorsal vagal shutdown, a freeze or collapse state marked by numbness, disconnection, and immobility.
People carrying unresolved trauma tend to cycle between sympathetic hyperarousal (anxiety, rage, panic) and dorsal vagal shutdown (depression, emotional numbness, emptiness) without spending much time in the safe, connected state. The concept of a “window of tolerance” describes the optimal zone of arousal where you can function in everyday life. Trauma narrows that window. Recovery widens it. The goal of every technique below is to gradually expand your capacity to stay in that functional zone rather than flipping between extremes.
Somatic Experiencing
Somatic Experiencing, developed by Peter Levine, is built on the observation that trauma symptoms originate from an incomplete defensive reaction. In a traumatic situation, your body initiates a fight-or-flight response but can’t complete it, perhaps because you were physically restrained, too young, or otherwise unable to act. That unfinished survival energy stays locked in the nervous system as chronic tension and hyperreactivity.
In SE sessions, a trained practitioner guides you to slowly increase your awareness of internal body sensations (called interoception) and physical position and movement (called proprioception). This heightened body awareness allows what practitioners call a “discharge process,” where the trauma-related activation resolves. You might experience involuntary shaking, heat, tingling, deep breaths, or waves of emotion as the stored energy completes its cycle. The process is deliberately slow and titrated. You aren’t reliving the trauma. You’re allowing your body to finish what it started, a process Levine calls “renegotiating” the traumatic stress reaction.
EMDR Therapy
Eye Movement Desensitization and Reprocessing uses bilateral stimulation, typically guided eye movements, while you recall a traumatic memory. Brain imaging research shows that EMDR produces significant functional decreases in the amygdala, thalamus, and prefrontal cortex regions that are disrupted in PTSD. In other words, it appears to calm the overactive threat-detection circuitry and restore more normal brain function.
The results are concrete. In one study of adolescents and young adults with PTSD from multiple traumatic experiences, 65% no longer met the diagnostic criteria for PTSD one month after just six days of intensive treatment, and 70% showed clinically meaningful improvement. EMDR doesn’t require you to talk through your trauma in detail or do homework between sessions, which makes it appealing to people who find talk therapy retraumatizing.
Trauma Releasing Exercises
Trauma Releasing Exercises (TRE), developed by David Berceli, use a series of simple physical exercises to fatigue specific muscle groups, particularly the psoas, a deep hip flexor that connects your spine to your legs and tends to tighten under chronic stress. Once the muscles are fatigued, the body begins to produce involuntary tremors, a natural neurogenic shaking that most people have experienced in small ways: a quivering voice during a speech, shaking legs before a performance.
Berceli describes this tremoring as a genetically encoded mechanism in the nervous system that serves several purposes. It reduces tightness in muscle tissue and fascia, can help realign the spine and hips by releasing held tension, and appears to lower anxiety and fear. The tremors typically start in the legs, move through the psoas and pelvis, travel up the spinal column, and shake tightness out of the body progressively. TRE can be practiced at home once learned, though starting with a certified provider is recommended so you can learn to regulate the intensity.
Vagus Nerve Exercises You Can Do Now
The vagus nerve is the longest cranial nerve in your body and a key player in shifting you from a stressed state to a calm one. Improving vagal tone, essentially strengthening the nerve’s ability to activate your relaxation response, is one of the most accessible ways to start working with your nervous system on your own.
- Slow diaphragmatic breathing. Breathe in deeply, drawing air all the way down so your belly expands. Hold for five seconds or longer, then exhale slowly. Repeat rhythmically. This directly activates the vagus nerve and triggers your parasympathetic (rest and recover) system. Even a few minutes shifts your physiology.
- Cold exposure. Splash cold water on your face, hold a cold pack to your face and neck, or take a brief cold shower. Sudden cold stimulates the vagus nerve, slows your heart rate, and redirects blood flow to vital organs. It can also release endorphins.
- Humming, singing, or chanting. The vagus nerve connects to your vocal cords and throat muscles. Sustained vibration from humming, chanting a single syllable, or singing activates the nerve directly. This is one reason why practices like “om” chanting have persisted across cultures for centuries.
- Laughter. Deep belly laughter stimulates the vagus nerve and can break the grip of an anxious or frozen state surprisingly quickly.
These aren’t permanent fixes on their own, but they are genuine physiological tools. Practiced consistently, they build vagal tone over time, which means your nervous system becomes more resilient and better at returning to a calm state after stress.
What Recovery Actually Looks Like
Releasing trauma from the nervous system is not a single dramatic event. It’s a gradual process of widening your window of tolerance so that you spend more time feeling regulated and less time stuck in hyperarousal (anger, anxiety, flashbacks) or hypoarousal (numbness, depression, emptiness). Progress often looks like noticing you recovered from a stressful interaction faster than you used to, or realizing you slept through the night without waking in a panic, or catching yourself relaxing without trying to.
Physical sensations during the process are normal and expected. People working through somatic approaches commonly report involuntary trembling, waves of heat or cold, tingling, sudden fatigue, or spontaneous deep breaths. These are signs of discharge, not signs that something is wrong. The nervous system is literally completing stress cycles that were interrupted, sometimes years or decades ago.
The timeline varies enormously depending on whether the trauma was a single event or chronic, how early in life it occurred, and what kind of support you have. Single-incident trauma in adulthood often responds faster. Developmental trauma from childhood, which physically altered brain structures during critical growth periods, typically requires longer, more consistent work. Combining professional therapy (EMDR, Somatic Experiencing, or similar modalities) with daily self-regulation practices like breathwork and movement tends to produce the most durable results.