Vagus Nerve: Can You “Reset” Your Nervous System in 5 Minutes a Day?

The vagus nerve has become a social media star: people “reset” it with ice water, humming and ear massage. Let’s look at what it really does, which vagus nerve exercises make sense — and why 5 minutes a day only works if the other 23 hours aren’t working against you.
Questions and answers
What is the vagus nerve?
It’s the longest of the cranial nerves: it connects the brain with the heart, lungs and digestive system. It’s part of the parasympathetic nervous system, which helps the body return to a calm state after stress.
How can you calm the vagus nerve at home?
The simplest way is slow breathing with a long exhale: in for 4 counts, out for 6. Quiet humming or singing, cool water on your face, a gentle foot massage and an easy walk also help.
What is vagal tone?
It describes how well your nervous system switches from “fight or flight” to rest mode. It’s assessed by heart rate variability: the higher it is, the more flexibly the body responds to stress.
How do you stimulate the vagus nerve before bed?
20–30 minutes before sleep, dim the lights, put your phone away and do 5 minutes of breathing with a long exhale. You can add quiet humming or calm music with a slow rhythm.