The vagus nerve: your recovery nerve (and how to activate it)
If you could choose one nerve to understand how your body handles stress, recovery and safety, it would be the vagus nerve.
The vagus nerve, also called the wandering nerve, is the longest nerve in your autonomic nervous system. It runs from your brainstem through your neck, heart, lungs and abdomen all the way to your intestines. And it is the direct connection between your brain and your body.
What does the vagus nerve do?
The vagus nerve has two branches. The dorsal branch is the oldest and governs the freeze response: immobilisation as protection in extreme danger.
The ventral branch is the newer, more evolved branch. It regulates social engagement, connection and recovery. It calms your heart rate, deepens your breathing and sends your system the signal: it is safe, you can let go.
The better your ventral vagal branch functions, the more resilient your nervous system. The easier you return to rest after stress.
How do you know if your vagus nerve is working well?
Healthy vagal tone shows up as:
- The ability to shift quickly between effort and rest
- Sleeping well and recovering
- Staying present in conversations without quickly being overwhelmed
- A sense of safety in your body that does not have to be constantly fought for
Low vagal tone looks like the opposite:
- Difficulty relaxing
- Quick overstimulation
- Sleep problems
- Digestive complaints
- A body that is always on guard
How do you activate the vagus nerve?
The good news: the vagus nerve is influenceable. Not through willpower, but through direct physiological signals.
- Extended exhale is one of the most direct methods: breathing with a longer exhale than inhale activates the vagal brake and slows your heart rate.
- Humming and vocalisation work through the connection between your vocal cords and the vagus nerve.
- Cold therapy, such as cold water on your face, triggers the dive reflex and switches on the parasympathetic system.
- Self-massage of the neck and collarbone directly stimulates the vagus nerve.
All these exercises are fully worked out in my Nervous System Guide, including guidance on when to use which tool.
