What Your Nervous System Is Trying to Tell You

Your nervous system has been talking to you for your entire life. It has been telling you when something is safe and when something is wrong. It has been sending you signals through your gut, your chest, your throat, your muscles, and your skin. The problem is that most people were never taught to listen — or worse, were taught that these signals are noise to be overridden in favour of rational thought.

Polyvagal theory, developed by Stephen Porges, offers a framework for understanding what your nervous system is communicating and why. It does not replace other models of stress and regulation, but it provides a remarkably intuitive map for reading your own internal states — and for understanding why you sometimes react in ways that your conscious mind cannot explain.

The Three States of the Autonomic Nervous System

Traditional models describe the autonomic nervous system as having two branches: sympathetic (fight or flight) and parasympathetic (rest and digest). Porges's polyvagal theory adds a crucial third distinction within the parasympathetic system, based on the two branches of the vagus nerve — the longest cranial nerve in the body, running from the brainstem to the abdomen.

The ventral vagal pathway (the newer, myelinated branch) supports what Porges calls the social engagement system. When this pathway is active, you feel safe, connected, present, and capable of engaging with others. Your voice has prosody, your face is expressive, your breathing is regulated, and your thinking is flexible. This is the state where you function best — not just socially but cognitively and physically.

The sympathetic nervous system activates when safety is threatened. Heart rate increases, muscles tense, breathing quickens, and attention narrows. This is mobilisation — the energy to fight or flee. It is not inherently unhealthy; it is your body's way of saying 'something requires action.' The problem arises when this state becomes chronic, which it does for many people living under sustained stress.

The dorsal vagal pathway (the older, unmyelinated branch) activates when the threat is overwhelming and mobilisation will not help. This is the shutdown response — freeze, collapse, dissociation, numbness. Heart rate drops, energy disappears, the world feels distant. It is the body's last-resort protective mechanism, and it is often mistaken for laziness or depression.

Neuroception: Why Your Body Reacts Before Your Mind Decides

Porges coined the term 'neuroception' to describe the nervous system's unconscious, continuous scanning for cues of safety and danger. Unlike perception, which involves conscious awareness, neuroception operates below the threshold of awareness. Your body decides whether a situation is safe, dangerous, or life-threatening before your thinking brain has weighed in.

This explains many experiences that feel irrational from the outside: your heart racing in a safe meeting, your stomach dropping when you read a neutral email, your body freezing during a conversation that is not objectively threatening. Your neuroception is responding to subtle cues — tone of voice, facial expression, body language, environmental features — that your conscious mind may not even register. You are not overreacting. Your nervous system is responding to data you are not consciously processing.

What Each State Is Trying to Communicate

• Ventral vagal activation (safety) communicates: 'You can engage. You can connect. You have enough resources to be present.' Signs include warm social feelings, clear thinking, relaxed muscles, regulated breathing, and a genuine desire for connection
• Sympathetic activation (mobilisation) communicates: 'Something needs attention. Act or prepare to act.' Signs include racing heart, muscle tension, irritability, hypervigilance, difficulty concentrating, and an urge to move, argue, or escape
• Dorsal vagal activation (shutdown) communicates: 'The threat exceeds your capacity. Conserve resources.' Signs include numbness, flatness, dissociation, extreme fatigue, foggy thinking, and a feeling of being disconnected from your own body and surroundings
• Mixed states are common — you can experience sympathetic activation with partial dorsal shutdown simultaneously, which feels like anxious paralysis: wired but unable to act. This is one of the most distressing nervous system states and is often the lived experience of chronic stress
• States are not choices — you did not decide to freeze or to feel anxious. These are automatic physiological responses. Understanding this removes the layer of self-blame that often accompanies nervous system dysregulation

Vagal Tone and Your Baseline Regulation

Vagal tone refers to the activity level of the vagus nerve and is often measured through heart rate variability — the variation in time between heartbeats. Higher vagal tone is associated with greater emotional regulation, better stress recovery, stronger social connection, and improved physical health. Lower vagal tone is associated with inflammation, slower stress recovery, and greater vulnerability to anxiety and depression.

The encouraging finding from research by Porges and others is that vagal tone is not fixed. It can be improved through practices that activate the ventral vagal pathway: slow, extended exhales (which directly stimulate the vagus nerve), humming or singing (which vibrate the vocal cords adjacent to the vagal pathway), safe social connection, gentle movement, and cold water exposure to the face. These are not wellness gimmicks — they are physiologically grounded interventions that shift nervous system state through bottom-up pathways.

How to Work with Your Nervous System

• Learn to name your state — 'I am in sympathetic activation right now' or 'I have gone dorsal' gives you a frame that reduces panic and enables choice. You cannot change a state you have not identified
• Use the exhale to shift — extending your exhale to be longer than your inhale (for example, breathing in for four counts and out for six) directly activates the parasympathetic nervous system. This is one of the fastest available interventions
• Seek co-regulation before self-regulation — Porges's research emphasises that the nervous system is designed to be regulated through safe connection with others. Being near a calm, safe person can shift your state more efficiently than any individual technique
• Respect the dorsal state — if you are in shutdown, do not try to force yourself into high-energy action. Meet the state where it is: warmth, gentle movement, sensory grounding, and patience. The path out of dorsal goes through ventral safety, not through sympathetic pushing
• Build state awareness as a daily practice — check in with your nervous system several times a day. Not 'How am I feeling emotionally?' but 'What is my body doing right now? What state am I in?' Over time, this builds the interoceptive awareness that allows you to intervene earlier
• Create environmental safety cues — soft lighting, warm tones, familiar spaces, and predictable routines all send safety signals to the nervous system. Your environment shapes your state more than you think

A Grounded Next Step

Pause right now and notice: is your jaw clenched or soft? Are your shoulders lifted or dropped? Is your breathing shallow or deep? Is your chest open or tight? You have just listened to what your nervous system is telling you. That act of noticing — without trying to fix anything — is the foundation of every regulation practice. Start there, and do it again tomorrow.