Hatha yoga taught from 1924 until his death in 1989. Among his students prominent in popularizing yoga in the West were K. Pattabhi Jois famous for popularizing the vigorous Ashtanga Vinyasa Yoga style, B. K. S. Iyengar who emphasized alignment and the use of props, Indra Devi and Krishnamacharya's son T. K. V. Desikachar. Another well-known school of Hatha yoga in the 20th-century has been the Divine Life Society founded by Swami Sivananda of Rishikesh (1887–1963) and his many disciples including, among others, Swami Vishnu-devananda – founder of International Sivananda Yoga Vedanta Centres; Swami Satyananda – of the Bihar School of Yoga;
Ashtanga vinyasa yoga six series are: Earlier practitioners of the style report that originally there were four series on the Ashtanga syllabus: Primary, Intermediate, Advanced A, and Advanced B. A fifth series of sorts was the "Rishi series", which Guruji said could be done once a practitioner had "mastered" these four. According to Sharath Jois, one must master poses before being given permission to attempt any others that follow. However, Manju Jois disagrees. According to Manju's accounts of his father's instruction, Pattabhi Jois also occasionally allowed students to practice in a non linear format. Many of Pattahbhi Jois' students now teach their Mysore