Activate your Vagus Nerve
Your most important ally against stress — what it is, and how to practice.
You've probably heard of breathing exercises. Of meditation, of yoga. Of techniques that are supposed to help you relax. And maybe you've wondered: why do some of them work so well — and others barely at all?
The answer lies in a nerve most of us have never consciously noticed. The vagus nerve.
It is the longest nerve of your autonomic nervous system. It connects your brain with your heart, your lungs, and your gut. And it is the most direct route between chronic stress and real calm.
In this article I'll explain what the vagus nerve actually is, why it matters so much for nervous system regulation — and which simple exercises let you activate it right away.
THE SCIENCE
What the vagus nerve is and why it changes everything
The vagus nerve — Latin for "the wandering one" — is the tenth cranial nerve and at the same time the longest nerve in the entire body. It originates in the brainstem and runs down through the neck, the chest, and the abdomen into the viscera.
It is the main carrier of the parasympathetic nervous system — the part of your nervous system responsible for rest, regeneration, and digestion.
That is not a metaphor. That is neuroanatomy. And it explains why you can't think your way out of a state of alarm — but you can work your way in through the body.
Heart rate variability: the marker of your capacity to regulate
A healthy, active vagus nerve shows up as high heart rate variability (HRV) — your heart's ability to adapt its rhythm flexibly to the situation at hand. High HRV means your nervous system is flexible and resilient, so you can switch quickly between activation and recovery. Which in turn means you generally respond to situations in a more stress-resistant, more regulated way.
Low HRV indicates that your vagus nerve is underactive and your system is stuck in chronic stress. The good news: HRV can be trained. Through targeted vagus nerve stimulation you can improve it measurably.
Polyvagal theory: three states that explain a lot
With his polyvagal theory, researcher Stephen Porges developed a new way of understanding the nervous system. He describes three neurological states we all know:
State 1 — Safety & connection (ventral vagus)
You feel safe, connected, present. You can think, feel, communicate. This is the state in which real life and real connection are possible. The ventral vagus is active.
State 2 — Mobilization & alarm (sympathetic)
Your body prepares for fight or flight. Heart rate rises, breath becomes shallow, muscles tense. That is useful in real danger — but toxic as a permanent state.
State 3 — Freeze & shutdown (dorsal vagus)
When stress lasts too long, the system switches into a shutdown mode. Numbness, exhaustion, an inner emptiness. Many of the women who come to me are exactly here — they don't feel anything anymore.
The aim of somatic work: strengthen the ventral vagus and build the capacity to move flexibly between these states.
EVERYDAY LIFE
Why your vagus nerve suffers in modern life
Your nervous system evolved for short-term danger. A predator. A threat. React quickly — and then recover.
Modern life works differently. The threats are chronic: constant availability and a flood of information, pressure to perform and to optimize yourself, social isolation despite digital connection, lack of sleep, screen time that keeps the nervous system on alert.
Over time, all of this weakens vagus nerve activity. You know the result: you're exhausted, but you can't switch off. Tired, but not sleepy. Empty, but restless. If that sounds familiar, my article on recognizing burnout will help you place it.
SOMETHING FOR YOU TO TRY
5 ways to activate your vagus nerve
The extended exhale
The simplest and most effective method. Exhaling engages the parasympathetic system — inhaling engages the sympathetic. By consciously lengthening your exhale, you give your nervous system a direct signal of safety.
How to do it: breathe in for 4 seconds — breathe out for 8 seconds. Repeat 3–5 times. That's all.
▶️ A guided video to follow along: Decoupling breath – 10 minutes guided pratice
Humming & Sound
The vagus nerve also runs through your larynx. When you hum, sing, or make an "mmm" sound, the vibration stimulates the vagus nerve directly — like an inner massage.
How to do it: breathe in deeply. On the exhale, hum a continuous "mmmm." Feel the vibration in your chest and throat. Three rounds — and notice the difference.
Cold water on your face
Cold stimulates the diving reflex — an evolutionary protective response that slows the heartbeat and engages the vagus nerve.
How to do it: splash cold water on your face, especially around the forehead, eyes, and cheeks. Quick and effective.
Social connection & eye contact
The ventral vagus is directly linked to our social nervous system. A real conversation, warm eye contact, a laugh with someone we like — all of it engages the vagus nerve and brings us back into a state of safety.
In daily life: seek out real connection on purpose. Not the next scroll — an actual phone call.
Yoga, movement & nature
Slow, conscious movement — especially yoga with a focus on breath — stimulates the vagus nerve through the combination of breath regulation, body awareness, and relaxation responses. Time spent in nature has also been associated with lower cortisol levels and higher vagal activity.
In daily life: a ten-minute walk in nature has a measurable effect. No podcast. No to-do list. Just walking and noticing.
AND THEN?
The vagus nerve and somatic coaching
In my work at In Munay, the vagus nerve is the central tool. Not as an abstract concept — as direct access to change.
For lasting change to become possible, we first have to calm the nervous system. Many coaches go straight into "the work" and want to make big adjustments with their client. But if the nervous system stays in chronic stress, the client may understand the change rationally — and still not be able to hold or integrate it.
So we give the nervous system a signal of safety first. We create a physiological foundation on which real work becomes possible. Because no coaching in the world works while the nervous system is in alarm. The mind goes offline when the body is fighting. That is exactly what the 3-Centers Method is built on.
The vagus nerve is not a spiritual concept. It is anatomy. It is measurable. And it can be trained. With simple daily practices you can increase its activity — and with it, your resilience and your capacity for real calm. Start today. With a single "mmmm."
Sources & further reading
Porges, S.W. (2011). The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-Regulation. W.W. Norton & Company.
Porges, S.W. (2017). The Pocket Guide to the Polyvagal Theory: The Transformative Power of Feeling Safe. W.W. Norton & Company.
Dana, D. (2018). The Polyvagal Theory in Therapy: Engaging the Rhythm of Regulation. W.W. Norton & Company.
Thayer, J.F. & Lane, R.D. (2009). Claude Bernard and the heart-brain connection: Further elaboration of a model of neurovisceral integration. Neuroscience & Biobehavioral Reviews, 33(2), 81–88.
Gerritsen, R.J.S. & Band, G.P.H. (2018). Breath of Life: The Respiratory Vagal Stimulation Model of Contemplative Activity. Frontiers in Human Neuroscience, 12, 397.
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