The vagus nerve is the tenth cranial nerve, and has the most extensive distribution out of all of the cranial nerves. Named for its tendency to wander, the vagus nerve acts like a central switchboard, sending out nerve impulses to and from the brain and most of the organs in our body. Its main role is to calm us down by activating the parasympathetic nervous system.

Our brains are the control centers for our entire bodies. Everything that happens in our bodies is regulated by our brains and our nervous systems…