The vagus nerve –
Your inner reset button to find your center again

There is a nerve in your body that is as old as life in community. A nerve that has sensed whether you are safe – or not – long before you had speech. Whether you can open up – or whether you need to protect yourself. This nerve is the vagus nerve (Nervus vagus), and it is much more than an anatomical detail from a biology book. It is something like your inner conductor, your seismograph for safety, your silent mediator between soul and body.

The term “vagus” comes from Latin and means something like “wandering”, “wandering”. And indeed, this nerve is a wanderer. It originates in the brain stem, runs through the neck, branches out into the ears, the larynx, the heart, the lungs, the stomach, the intestines – all the way down into the abdomen. It is the longest cranial nerve in the human body and carries around eighty percent of its information not from the brain to the body, but from the body to the brain. It listens. It reports. It connects.

First things first: stress

Before we talk about the vagus nerve, I would like to say something that I consider to be fundamental – and which is still far too rarely addressed first in modern medicine: Stress. The vast majority of people who come into a doctor’s office today live in a state of chronic inner tension. Not always dramatically visible. Not always labeled as such. But there – as a background noise that never quite stops. As a body that never really comes to rest. As a nervous system that has long forgotten what real relaxation feels like.

Today, stress is the biggest and most underestimated factor in the development of illness – in any form. Whether digestive problems, hormonal disorders, autoimmune diseases, insomnia, heart disease or depressive moods: Behind almost every chronic clinical picture, if you look closely, there is a nervous system that has been living in a state of emergency for a long time. That’s why the first question to be asked in any meaningful therapy – regardless of the area or method – is: What is your stress level really like? What kind of stress are you under? And what do you need to find your own center again?

I will write a separate article on this topic, as it deserves the space it needs. But here, as an introduction to the topic of the vagus nerve, it is indispensable: all exercises, all methods, all approaches relating to the vagus are ultimately ways to reduce stress – to return to a state that your body actually knows, but perhaps no longer experiences regularly. And the great thing is: you can start doing it yourself. Quite simply. Without any equipment. This is self-help in its purest form – back to basics, back to you.

The autonomic nervous system: your silent conductor

To really understand the vagus nerve, it helps to take a quick look at the big picture: the autonomic nervous system. It’s the part of your nervous system that regulates everything you don’t consciously control – heartbeat, breathing, digestion, immune responses, hormone release. It runs in the background, around the clock, without you having to give it a second thought. Autonomous means: autonomous, independent of your will.

This system classically consists of two major antagonists: the sympathetic and the parasympathetic nervous system. The sympathetic nervous system is your activation system – it switches the body into standby mode. Your pulse increases, muscles tense up, stress hormones such as adrenaline and cortisol are released and digestion is slowed down. The body prepares for performance, fight or flight. This is vital – and was literally the case for our ancestors when a sabre-toothed tiger appeared on the horizon.

The parasympathetic nervous system is its counterpart: the system of rest, regeneration and healing. It slows down the heartbeat, stimulates digestion, promotes sleep and activates the body’s own repair processes. It is also known as the “rest and digest” mode – recover and digest. When the parasympathetic nervous system dominates, your body is in a state in which it can heal.

The problem of our time is this: Most people live permanently in sympathetic mode. The body does not distinguish between a real sabre-toothed tiger and a full email inbox, a conflict at the office or scrolling through bad news in the evening. For the nervous system, stress is stress – and if it never ends, recovery never really ends either. This is where the vagus nerve comes into play: it is the most important nerve of the parasympathetic nervous system and therefore your most direct route back to a state of calm and regeneration.

The polyvagal theory: three states that shape your life

In the 1990s, neuroscientist Stephen Porges described something that has fundamentally changed our understanding of stress, trauma and relationships: the polyvagal theory. It states that our autonomic nervous system does not simply switch between accelerator and brake – i.e. between the sympathetic and parasympathetic nervous systems – but that it has three hierarchically organized states.

The first and evolutionarily oldest state is that of the dorsal vagus. It is the primal state of freezing, freezing, playing dead. When all else has failed, when fight or flight are no longer an option, the nervous system switches into this mode: disconnection, dissociation, emotional numbness. Many people who have had traumatic experiences are familiar with this state – even if they would perhaps never call it that. The tiredness that brings no recovery. The feeling of not really being there. The inner emptiness.

The second state is that of the sympathetic nervous system: mobilization, activation, fight or flight. A racing heart, shallow breathing, tense muscles – the body prepares itself for a threat. In small doses, this is life-saving. As a permanent state, it destroys health.

The third and evolutionarily most recent state is that of the ventral vagus. It is the state of social connectedness, security and regulation. When this part of the nervous system is active, you can speak openly, look someone in the eye, laugh, allow yourself to be touched – both internally and externally. You are present. You can heal.

The key insight of the polyvagal theory is this: Your nervous system does not consciously decide what state it is in. It reacts to so-called neuroception – an unconscious perception of safety or danger long before your mind has understood anything. And it learns. What it learned in childhood, it repeats throughout its life – until it learns something else.

Vagus, heart and heart rate variability

One of the most direct ways to measure the condition of your vagus nerve is via your heart – more precisely, via heart rate variability, or HRV for short. HRV describes how variable the intervals between your heartbeats are. That sounds strange at first glance: Isn’t it good if your heart beats evenly? No – quite the opposite. A healthy, well-regulated nervous system allows the heart to react flexibly. It speeds up slightly when we breathe in and slows down when we breathe out. This variability is a sign of adaptability and resilience.

A high HRV is considered an expression of a well-functioning ventral vagus. A low HRV, on the other hand, is associated with stress, exhaustion, depression, chronic inflammation and an increased risk of heart disease. It shows: The system is rigid. It can no longer react flexibly.

The good news: HRV can be trained. Anything that strengthens your vagus nerve also increases your heart rate variability – and gives your heart flexibility and yourself resilience.

Vagus and silent inflammation: the underestimated connection

There is another property of the vagus nerve that is receiving increasing medical attention: its anti-inflammatory effect. The vagus communicates with the immune system via the so-called cholinergic anti-inflammatory reflex. When it is active, it inhibits the release of pro-inflammatory messenger substances – primarily TNF-alpha, interleukin-1 and interleukin-6.

This means that a weak, underactive vagus nerve is not just a sign of stress – it actively promotes silent, chronic inflammatory processes in the body. This silent inflammation underlies many modern diseases: autoimmune diseases, depression, metabolic disorders, neurodegenerative processes. The vagus is therefore also part of the answer to the question of why constant stress makes us ill – and why real relaxation heals, far beyond the subjective feeling of well-being.

The vagus and your intestines: the inner conversation line

If you love someone, you know what it feels like when your gut speaks. And that’s not a metaphor – it’s physiology. There are around 100 million nerve cells in the gut, which is why it is often referred to as the “second brain”. The vagus is the most important communication line between these two brains.

Most of the information flows from the bottom up. Your gut tells your brain about the state of your microbiome, the filling level of your stomach, the activity of your intestinal mucosa. And your brain responds: with digestive enzymes, intestinal movements, immune reactions. This bidirectional axis – the so-called gut-brain axis – is the reason why anxiety turns your stomach, why sadness takes away your appetite, and why prolonged stress chronically unbalances digestion.

Certain strains of bacteria have been shown to communicate with the brain via the vagus, influencing mood, anxiety and cognitive performance. A healthy microbiome strengthens vagal tone – and good vagal tone protects the integrity of the gut lining. It is a cycle. Not an isolated organ, not a one-sided process.

Trauma and the vagus: when the body doesn’t forget

Many people carry experiences within them that have permanently changed their nervous system. Loss, overwhelm, powerlessness, early attachment injuries – all of this leaves traces not only in the memory, but in the body itself. The body remembers, even if the mind has forgotten.

A traumatized nervous system often oscillates between overexcitation and numbness – between the sympathetic nervous system and the dorsal vagus – without ever really finding its way to the ventral, safe state. The capacity for real connection, for joy, for lightness is limited. This is not a problem of will. It is neurobiology.

This is one of the most important findings of modern trauma research: healing does not happen through understanding alone, through words and insight. Healing happens through the body. Through experiences of safety. Through slow, gentle stimulation of the ventral vagus – in a safe therapeutic space, in loving relationships, in silence after breathing.

Activate the vagus: What really helps

The beauty of the vagus nerve is that you can address it directly. You don’t need any expensive equipment or complicated technology. You already have everything you need with you.

Breathing: The simplest and most effective way is a prolonged exhalation. Four seconds in, six to eight seconds out – you immediately activate the parasympathetic nervous system. Resonant breathing with around five to six breaths per minute is considered to be particularly effective for increasing HRV. Just ten minutes a day makes a measurable difference.

Sounding and humming: The vagus innervates the larynx and vocal folds. Humming, singing, gargling with water and the sound of vowels – especially the deep “Mmm” – activate the vagus via its branches in the throat. This is not esotericism. This is neuroanatomy.

Cold: Cold water on the face or a cold shower activates the diving reflex and stimulates the vagus via the trigeminal nerve. Even a brief cold stimulus can noticeably reduce the heart rate and calm the nervous system.

Connection and co-regulation: The ventral vagus is a social nerve. It is activated by genuine connection – by a warm conversation, by a long hug, by the feeling of really being seen. Co-regulation is one of the oldest and most effective forms of healing.

Movement: Gentle, rhythmic movement such as walking, swinging or yoga supports the vagus tone. Intensive stress initially activates the sympathetic nervous system – the subsequent recovery then strengthens the vagus if it is consciously designed.

Meditation and contact with nature: Quiet moments train neuroception. You learn to recognize safety – and to choose it. Regularly spending time in nature, especially with a panoramic view of wide open spaces, also calms the nervous system in a way that we all know.

Books, videos and the first step

The good news is that you don’t have to find out on your own. In recent years, a whole wave of literature has emerged on the subject of the vagus nerve – and rightly so. Bookshelves are filling up with titles that all take a slightly different approach, but ultimately pursue the same goal: to make the vagus nerve tangible, not just explainable.

Most of these books combine knowledge transfer with specific exercises – and it is precisely this combination that is valuable. You will find breathing techniques, certain postures and positions that calm the nervous system, as well as eye movement exercises that originate from trauma work and address the vagus via the optic nerve. Some methods are reminiscent of yoga, others of somatic forms of therapy – and many of them can be wonderfully integrated into everyday life.

One particular approach that is worth mentioning in this context comes from Gopal Norbert Klein: honest sharing. It is a communication and self-awareness practice that sounds simple at first glance – and that is precisely where its strength lies. You learn to communicate what is happening inside you in a radically honest way: not as a story, not as an analysis, not as a reproach, but simply as a direct inner experience. Physical sensations, feelings, thoughts – in the here and now, without detours. That was it. No interpretation, no solving, no explaining.

What sounds so simple gets to the heart of what vagus work is all about: getting back in touch with your own inner experience, out of your head and back into your body. Many people have lost this contact – they live in thoughts, in stories about themselves, in reactions to others. Honest sharing creates a moment of real presence. And presence – as we now know – is exactly what the nervous system needs to regulate itself. It is often practiced in groups, often in a circle, each person speaks briefly for themselves – and is simply heard, without comment, without feedback. It is precisely this being heard without reaction that can be deeply moving.

If you just want to try out what vagus work feels like, I recommend you buy one of these books – or take a look at YouTube first. There are now many well-made videos with instructions for vagus nerve exercises, free of charge and immediately accessible. Some of it will feel strange. Others will surprise you. And perhaps you will discover which approach is right for you – because, as is so often the case in naturopathy, it’s deeply individual.

A psychosomatic view: What the vagus wants to tell us

When I work with people who suffer from chronic exhaustion, digestive problems, palpitations or a diffuse feeling of inner tightness, I always ask myself: How safe does this person feel within themselves? In their body? In their relationships?

This is because the vagus nerve does not react to the world as it is. It reacts to the world as the nervous system perceives it. And this perception is deeply shaped: by early bonding experiences, by what we had to learn as children in order to be safe, by messages that we carry within us, often without realizing it.

A weak vagal tone is therefore often not just a physical issue. It is also a reflection of how much security a person has found in themselves and in the world. How familiar they are with the feeling of calm – or whether calm feels threatening because it is too unfamiliar.

Working with the vagus is always an invitation: How can I be a little safer today? Which moment can I really allow to arrive today? What connection – to myself, to others, to stillness – nourishes my inner peacemaker?

No coincidence: why the vagus is so important right now

It’s no coincidence that bookshelves are filling up with vagus therapy titles right now. It is a sign of the times. We live in a society in which constant stress has long since become the norm – so normal that many no longer even recognize it as such. It is simply there. As inner restlessness, as sleep problems, as this vague feeling of never really getting anywhere. And at the same time, I have been observing something else for years: a deep, often unconscious search for meaning. More and more people feel that something is missing – not materially, but inwardly. A grounding. A root. A feeling of: I am here. I am enough. I am with myself.

The root chakra suffers. The center is weakened – and by that I don’t just mean the chakra as such, but specifically what TCM describes as the spleen-stomach principle: the ability to digest – not just food, but impressions, emotions, experiences. When this center is weakened, brooding begins. The head goes round in circles. Thoughts find no ground. You think and think and think – and the body, the opposite pole, becomes shorter and shorter. Too little movement, too little stillness, too little real craftsmanship of everyday life, and a diet that often reinforces this center weakness instead of nourishing it.

This topic has been close to my heart for many years – not as a theoretical insight, but as a conviction I put into practice in my daily work with people. Stress and its effects, relaxation and balance as an actively shaped part of life: this is not a nice addition to health. It is its basis. An absolute basis. And it is still far too often mentioned in passing, ticked off, moved on from. Yet it should be the first thing we talk about – in every practice, at every visit, at every therapy. Because a nervous system that knows no rest cannot heal. That is not an opinion. It is biology.

In this sense, the vagus nerve is not just a nerve. It is a mirror – for the state of our time, for the state of our society, and for the state of each individual person who asks themselves: Why do I feel like this? And what can I do about it myself? The answer starts small. With the breath. With a minute of silence. With an honest look at what is really inside me right now. Back to basics – that’s not a small thing. That is everything.