Mahesh Yogi formulated a six month course on yoga asanas followed by a second course with more advanced postures for use in a one year course. According to Maharishi, yoga asanas are "...a reliable practice from the ancient tradition of yogis."
He recommended yoga asanas as a way to keep the body flexible. According to Yogi the advantage of asanas over other types of exercise is that yoga asanas do not consume energy. This course was adopted by the International Academy of Meditation at Shankaracharya Nagar, Himalayas. According to David Gordon White, "It was especially within two tantric sects, the Western Transmission and the Yogin Kaula (transmitted by Matsyendra) that a practical concomitant to this speculative - and in some cases gnoseological or soteriological - metaphysics" came to be elaborated by the "Nath Siddhas", numbering 84 by the Siddha tradition, who claim their origins in the person and teachings of Matsyendranath. Works Cited: "A Six Month Course in Yoga Asanas" by Maharishi Mahesh Yogi Rishikesh: International SRM Publications, 1962 "The Alchemical Body" Siddha Traditions in Medieval India by David Gordon White Chicago: University Press, 1996 Paper. 596 pages. Illustrated. Bibliography. Index.