The answer all comes down to the autonomic nervous system. One of the chief roles of the autonomic nervous system is to quickly and efficiently respond to danger by turning our internal dials up and down. What’s important to understand about the autonomic nervous system is that it’s… well… automatic. What a lot of people don’t understand about the autonomic nervous system is how closely linked all of its disparate functions are. In fact, as far as autonomic systems go, there is exactly one exception to this rule: Breathing.

Source: Forbes November 28, 2016 12:30 UTC