Many ask me whether pranayama ... postpones old age. Why worry about it? Death is certain. Let it come when it comes. Just keep working. The soul has no age. It doesn't die. Only the body decays. And yet, we must never forget the body, since it is the garden we must cherish and cultivate.
B.K.S. IyengarPenetration of our mind is our goal, but in the beginning to set things in motion, there is no substitute for sweat.
B.K.S. Iyengar