any religious or philosophical practice amounts to a psychological discipline; in other words, it is a method of psychic hygiene. The numerous purely physical procedures of yoga are a physiological hygiene as well, which is far superior to ordinary gymnastics or breathing exercises in that it is not merely mechanistic and scientific but, at the same time, philosophical.
Jung argues that yoga functions for the West as a superior form of psychic and physiological hygiene precisely because it integrates bodily practice with philosophical and cosmic dimensions, unlike mere gymnastics.
, Psychology and Religion: West and East, 1958thesis