Dorsal Vagal Response Poster

When stress feels inescapable, the body does not always fight or flee. Sometimes it shuts down. This poster explains the dorsal vagal response - an ancient, protective state of conservation - in plain language.

The dorsal vagal response is the oldest branch of the autonomic nervous system's survival hierarchy. When a threat is read as overwhelming and inescapable, the nervous system moves past fight-or-flight into immobilisation. Heart rate slows, blood pressure drops, the thinking brain quietens, and natural opioids release to numb pain. This is automatic. It is not a choice, and it is not a flaw.

What is happening

The body has read the situation as too much and switched into its oldest survival gear: shutdown. This is a conservation state designed to protect you when escape does not feel possible. It is regulated by the dorsal branch of the vagus nerve, part of the parasympathetic nervous system.

What it feels like

• Heavy, slow, lethargic
• Spacey, foggy, far away
• Unable to make decisions
• Willpower vanishes
• Stuck, frozen, or stubborn
• Emotionally flat or numb
• Deep, bone-level tiredness
• Body aches and heaviness
• Muscles brace or collapse
• Low-grade inflammation
• Immune system dips
• Sleep does not restore

The body cascade

Sustained stress leads to muscles bracing and tightening, which drives inflammation up and immunity down, which in turn produces aches, fatigue, and broken sleep. Understanding this chain helps explain why prolonged stress shows up physically.

A reminder

Your body is not betraying you. It is protecting you. This state is temporary, and you will come back.

Who is this for?

Neurodivergent people, employers, educators, healthcare professionals, parents and carers, and anyone supporting someone through chronic stress, burnout, or shutdown.

About the creator

This resource was created by Loren Snow, founder and lead trainer at Neurodiverse Training. As a neurodivergent individual himself, Loren brings lived experience and over a decade of professional expertise to every resource he creates.