Cranial nerve X controls signals from gut to brain and brain to gut. This communication is vital to proper digestion. So many folks are having dis-ease and pain due to cortisol (the stress/ "death" hormone) irritating their insides.
New research shows the "gut" is a second brain (or even a primary one as Dr. Gundry says in The Longevity Paradox book) that must be fed well and taken care of.
We neutralize stress in the brain and help the parasympathetic system rest well.