They figured this out long ago. Really in fact it opens the bile duct injecting straight into your left clavicle artery essential elements and creates space for the endocrine system to flow; in the closed loop system. Making you healthy, but hey let's just call it deep breathing is good for you. The mechanic would say your oil filter is dirty, so change it(breathe) or the engine will blow.
The Dalai Lama, when asked what surprised him most about humanity, answered: "Man. Because he sacrifices his health in order to make money. Then he sacrifices money to recuperate his health. And then he is so anxious about the future that he does not enjoy the present or the future; he lives as if he is never going to die, and then dies having never really lived."