Somatic shaking is a deliberate, rhythmic trembling of the body designed to release physical tension and calm your nervous system. The basic technique is simple: you stand with soft knees and let your body shake, starting gently and allowing the movement to spread. A typical beginner session lasts about 15 minutes, and most practitioners recommend starting with three to four sessions per week.
Why Shaking Works
After a stressful or frightening experience, your body floods with adrenaline, noradrenaline, and cortisol. Animals in the wild often tremble or shake after escaping a predator, and this motor discharge helps their nervous system return to a calm baseline. Humans have the same built-in mechanism, but we tend to suppress it. We hold still, “keep it together,” and push through. When that shaking impulse gets suppressed repeatedly, residual stress hormones and muscular tension can linger, contributing to chronic tightness, hypervigilance, and a nervous system stuck in a low-grade alarm state.
Shaking interrupts that loop. The tremors activate subcortical motor pathways, essentially completing the physical stress response your body never finished. This allows your autonomic nervous system to shift out of its defensive mode (the branch responsible for freezing and shutting down) and back toward the branch associated with safety, social connection, and self-soothing. Some people show measurable increases in heart rate variability during or after shaking, which reflects improved vagal tone and stronger parasympathetic activity.
The tremors typically begin in the legs and pelvic region, then spread upward through the torso. This pattern mirrors the progressive reactivation of your body’s calming systems from the core outward.
The Basic Standing Shake
This is the most accessible version and requires no equipment or warm-up exercises. Here’s how to do it:
- Set up your space. Find a spot where you can stand comfortably and move without bumping into anything. Some people prefer soft music or silence. Bare feet on a stable surface works well.
- Soften your body. Stand with your feet hip-width apart, knees slightly bent. Let your jaw relax, drop your shoulders, and unclench your hands. Take a few slow breaths to settle in.
- Start shaking intentionally. Begin bouncing gently through your knees, letting the vibration travel up through your legs and hips. You’re not jumping. Think of it as a loose, easy bounce, like your legs are springs. Let your arms hang and wobble naturally.
- Let the movement spread. After a minute or two of intentional bouncing, start shaking your hands, arms, and shoulders. Let your whole body get involved. There’s no correct form. Some people look like they’re shivering, others look like they’re dancing loosely.
- Follow what your body wants to do. After a few minutes of intentional shaking, you may notice certain areas trembling on their own. Your legs might vibrate, your belly might flutter, your jaw might chatter. This is the spontaneous release kicking in. Let it happen without controlling it.
- Wind down gradually. When you’re ready to stop, slow the shaking over about 30 seconds rather than stopping abruptly. Stand still, feel your feet on the ground, and take several slow breaths. Notice how your body feels.
Set a timer for 15 minutes at first. You can extend sessions as you get more comfortable, but starting shorter helps you gauge how your body responds.
The Floor-Based Method (TRE Approach)
Tension and Trauma Release Exercises, developed by David Berceli, take a more structured approach. Instead of starting with standing shakes, TRE uses a series of exercises that deliberately fatigue and stretch the leg muscles before inviting tremors to emerge on their own. The idea is that tiring specific muscle groups creates the conditions for spontaneous shaking.
A simplified version of the floor position: Lie on your back with your knees bent and feet flat on the floor, about hip-width apart. Slowly let your knees fall open to the sides, keeping the soles of your feet together (like a butterfly stretch on your back). Allow your legs to tremble. If nothing happens immediately, bring your knees slightly closer together until you find the position where a gentle vibration starts in your inner thighs or pelvis. Stay here and let the tremors do their thing.
You can also trigger the process from a wall sit. Stand with your back against a wall and slide down until your thighs are roughly parallel to the floor. Hold this until your legs start to shake from fatigue (usually one to two minutes), then move to the floor position above. The fatigue from the wall sit primes your muscles to tremor more easily.
Many people find that intentionally initiating a small shake “primes the pump,” and spontaneous movements take over from there. Relaxing one area, like your jaw or shoulders, often triggers natural releases in connected regions.
Targeted Areas for Deeper Release
While full-body shaking is the most common approach, you can focus on specific areas where you hold tension. Gentle pelvic tilts and hip circles can activate the deep hip flexor muscles, which connect directly to the spine and diaphragm and tend to store significant stress-related tension. Grounding exercises like pressing your feet firmly into the floor while standing can prepare the lower body for release.
Your jaw is another common tension hotspot. Try letting your mouth hang slightly open during shaking and gently wobbling your jaw side to side. Shoulder shrugs followed by a quick shake-out of the arms can release upper body holding patterns. The key principle is the same everywhere: use a small intentional movement to invite a spontaneous one.
How Often and How Long
For beginners, 15-minute sessions three to four times per week is a solid starting point. This gives your nervous system enough stimulus to adapt without overwhelming it. Once you’re familiar with the process and know how your body responds, you can practice daily if you like. Some experienced practitioners extend sessions beyond 15 minutes, while others find they can trigger tremors in just a few minutes without needing the full warm-up routine.
Pay attention to how you feel in the hours after a session. Most people report feeling calmer, lighter, or slightly tired in a pleasant way. If you feel agitated, spacey, or emotionally flooded, you likely shook for too long or too intensely. Scale back next time. This is a practice where less is often more, especially in the beginning.
When to Be Cautious
Somatic shaking is gentle enough for most people, but certain situations call for extra care. If you have an unmanaged seizure disorder, recent surgery or injury, or are in your first trimester of pregnancy, check with your healthcare provider before starting. People with severe dissociation or unprocessed trauma should work with a trauma-informed practitioner rather than doing this solo, since shaking can sometimes surface intense emotions or physical sensations that feel disorienting without proper support.
If at any point during a session you feel panicky, dizzy, or disconnected from your surroundings, stop shaking, press your feet into the ground, and focus on slow exhales. You’re in control of the process. You can always pause, reduce the intensity, or stop entirely. The goal is to feel safer in your body, not to push through discomfort.