Vagus Nerve

The Vagus Nerve
Helpful Information about the
vital importance of slow, deep breathing:
https://sass.uottawa.ca/sites/sass.uottawa.ca/files/how_to_stimulate_your_vagus_nerve_for_better_mental_health_1.pdf
https://www.thecut.com/tags/vagus-nerve/
Includes an excellent diagram of the vagus nerve.