The vagus nerve, explained simply
It is the longest nerve in the body, and it controls almost everything that matters for how you feel. Here is what it does and how to tone it.
You have probably heard the vagus nerve mentioned in a wellness context. It has become something of a buzzword. But the science behind it is real, and understanding it changes how you think about stress, rest, and everything in between.
What is the vagus nerve?
The vagus nerve is the longest cranial nerve in the body. It runs from the brainstem through the neck, chest, and abdomen, connecting the brain to the heart, lungs, gut, and nearly every major organ. Its name comes from the Latin for "wandering" — because that is exactly what it does.
It is the main highway of the parasympathetic nervous system — the branch responsible for rest, digestion, repair, and emotional regulation.
What does vagal tone mean?
Vagal tone is a measure of how active and responsive your vagus nerve is. High vagal tone means the nerve fires efficiently, allowing your body to shift smoothly from stress to rest and back again. Low vagal tone means the system is sluggish — harder to calm down, harder to recover, harder to regulate emotions.
High vagal tone is associated with better mood, lower anxiety, stronger digestion, healthier heart function, and greater emotional resilience. Low vagal tone is linked to chronic stress, inflammation, depression, and gut issues.
How to strengthen it
Almost everything at The Garden is, at its root, vagal toning:
- Slow breathing with extended exhales — the single most direct way to activate the vagus nerve
- Humming, chanting, or singing — the vagus nerve runs through the throat, and vibration stimulates it directly
- Sound healing — external vibrations entrain the nervous system toward parasympathetic dominance
- Cold exposure — even splashing cold water on the face triggers the vagal response
- Social connection — the vagus nerve is deeply involved in reading safety from faces and voices
- Yoga and gentle movement — especially postures that open the chest and throat
The simple version
The vagus nerve is your body's brake pedal. When it works well, you can accelerate when you need to and slow down when you do not. When it is weak, you are stuck with your foot on the gas. Everything we do at The Garden is, one way or another, strengthening that brake.