Yoga is a deep and extensive topic to explain, and attaining absolute perfection in it is extremely difficult. Swami Shantidharmananda Saraswati has however tried to enrich this concise book with complete information for a beginner, a patient and even for an expert. He has shed into it his intellect and experience of Upanishadic and literary sources matching with scientific research besides the basic knowledge obtained from his Guru and Rishis. Though this book has been written by taking ashtanga-yoga as a base, all types of asanas and procedures of yoga have been accommodated in a disciplined manner. Secrets of hathayoga, rajayoga, kriyayoga, japayoga, layayoga, kundalini yoga, nadayoga, svarayoga, etc. have been summarized in brief. This is the reason why it has been named as Purna Yoga. Since all the topics related to yoga have been divided into fifteen chapters, this book has been referred to as Yoga Pancadashi as well. Purna Yoga is a guide for a blissful life as well as a very useful tool for every individual in the society.