The purity of the body is more desirable than bodily strength. Purity of body consists of three things: Pure blood, sound muscles, and skin in proper condition. One might ask, how can one be strong without a pure body? But I should say, one can be. There are many strong and vigorous-looking people with something wrong in their flesh, blood or skin. Health, from a spiritual point of view, does not mean a strong muscular body, health means a body sound in all its aspects. The standard of normal health is different for a mystic from what a scientist today thinks.