The Hatha Yoga Pradipika is an ancient text used by Yogis to create the power. This is one of the earliest treatises on Hatha Yoga; all the modern books are based on it.
This book is intended as an aid for those who wish to learn the advance practices of Hatha (Kundalini) Yoga from a qualified teacher. It is suggested that it also be used in conjunction with Complete Illustrated Book of Yoga by Swami Vishnu-Devananda, the Sivananda Companion to Yoga (known as the Book of Yoga in Britain), and Yoga Mind and Body.
Many of the instructions given here have been purposely veiled by the original writers, others need elaboration, and many require the guidance of a teacher for correction. Swami Vishnu-Devananda has repeatedly stressed that these practices are not for beginners, and that to violate this caution is to put the psyche at risk. Please therefore, follow these instructions along with the guidance of your guru.