Respiration is one physiological function that is affected by a change in your state in mind. Luckily, this is a two-way street. Respiration can be consciously altered to influence your nervous system. Very few behaviors are affected by both conscious and autonomic control (blinking, facial muscles, and a couple others) but breathing is unique in its intricacy and influence.
Read more about the science behind Spire here: www.spirehealth,com/science