Light on Yoga - Revised Edition Author:B. K. S. Iyengar Deepen your practice with the definitive guide to the philosophy and practice of yoga -- the ancient healing discipline for body and mind -- by the world-renowned teacher who brought the art of yoga to the West, Light on Yoga provides complete descriptions and illustrations of yoga positions and breathing exercises, along with... more » explanations of the main philosophies of yoga. Iyengar's style and teachings emphasize precision and alignment, planned sequencing, timing, and the use of props.