Whether you are looking for a physical improvement or a mental one, Light on Yoga will give you what you need. Each asana is accompanied by at least one (usually more) photographs to illustrate the proper technique, a synopsis on the effects, and details instructions that anyone can follow. Breathing, focus, position of each limb and which muscles to focus on are all covered thoroughly. When applicable, there are even variations that can be applied, depending on the student's comfort and skill level, so that no one need skip an important technique just because he or she is starting out and has no outside help. Iyengar then further assists the beginning student with a list of which poses to start with and add each week, for a comprehensive schedule that will keep you improving for years. Also included is a list of common ailments and asanas that can relieve these ailments. Anyone interested in strength, flexibility, balance, and inner peace should have at least this one book.