“Every religious or philosophical practice means a psychological discipline, that is, a method of mental hygiene. The manifold, purely bodily procedures of Yoga11 also mean a physiological hygiene which is superior to ordinary gymnastics and breathing exercises, inasmuch as it is not merely mechanistic and scientific, but also philosophical; in its training of the parts of the body, it unites them with the whole of the spirit, as is quite clear, for instance, in the Pranayama exercises where Prana is both the breath and the universal dynamics of the cosmos….
