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Freeze intensity 5/5

Tonic immobility: scientific explanation

Tonic immobility is a neurological survival reflex present in all mammals. Triggered when flight and fight are judged impossible. Documented in humans since 1977 (Suarez & Gallup), it affects 70% of rape victims (Möller 2017).

Why it happens — the mechanism

Mechanism: adrenaline rush → dorsal vagal activation → tonic contraction of all striated muscles → partial analgesia → total immobility for 10s-30min. Subject is conscious but can't move or speak. Documented by brain imaging (Marx et al, 2008).

How the Avikzar System answers it

The Avikzar System acknowledges this biological reality and trains the only moves available under partial tonic immobility: knee lift, jaw closure, biceps contraction. These can be enough to survive.

Yehouda Avikzar (10th Dan) — Freezing isn't your fault — it's your biology. But not training after experiencing one is your responsibility.

Frequently asked questions

Is tonic immobility dangerous?

Not in itself. But exposes to worsened assault and doubles PTSD risk (Möller 2017).

Other reactions to danger

I freeze when I'm attacked — what to do?I freeze in the face of danger — explanation and fixI can't move during an attackI can't scream when facing an attackerI lose my composure facing an attacker

Also see

2 attackers

Street attack by 2 people: what to do?

3 attackers

Attack by 3 people: survival tactic

4 attackers

Attack by 4 people: group survival

Real scenario

Street mugging at night

Real scenario

Phone snatch and run

Real scenario

Nightclub exit attack

Train the reflexes that bypass freeze

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