Yoga schools are as diverse as the meanings of the bracket term yoga. Within the major branches of yoga such as haṭha, lāya, rāja, jñāna, and bhakti there are many different schools and lineages, both extant and defunct. Since the late 19th century, a great number of distinct new styles of "Yoga" have been introduced by individual teachers. Some schools and traditions are occasionally referred to as yoga or yogic for their similar practices, despite having no foundation in the Indian tradition; these include Shin Shin Tōitsu-dō, and Daoyin. Modern Hinduism and Neo-Hindu revival The term "Yoga" has been used for various philosophies and concepts in the context of Hindu revivalism and Neo-Hindu religious and philosophical movements. 1918: The Yoga Institute - Shri Yogendra 1920: Agni Yoga - Nicholas Roerich and his wife Helena Roerich (theosophy) 1920: Self-Realization Fellowship - Paramahansa Yogananda 1921: Integral Yoga - Sri Aurobindo, The Synthesis of Yoga 1948: Divine Life Society - Swami Sivananda 1950s: Satyananda Yoga - Swami Satyananda Saraswati 1955: Ananda Marga - Shrii Shrii Anandamurti 1960s: Transcendental Meditation - Maharishi Mahesh Yogi 1970: Bikram Yoga - Bikram Choudhury 1971: Himalayan Institute of Yoga Science and Philosophy - Swami Rama 1970s: Siddha Yoga - Swami Muktananda 1970s: Sahaja Yoga, a new religious movement founded by Nirmala Srivastava 1981: Art of Living - Ravi Shankar 1991: Shiva Yoga – Shankarananda 1997: Ananda yoga - Swami Kriyananda Styles of yoga as exercise India and other Asian countries are home to thousands of yoga schools founded over the last century to teach yoga as exercise, which unlike all earlier forms consists in large part of asanas. Below are some and their style of yoga. 1948: Ashtanga Vinyasa Yoga - Sri K. Pattabhi Jois 1963: Bihar School of Yoga - Swami Satyananda Saraswati 1960s: Sivananda Yoga - Swami Vishnu-devananda 1960s: Iyengar Yoga - B.K.S. Iyengar 1970s: Yin Yoga - Paulie Zink 1971: Bikram Yoga - Bikram Choudhury 1980s: Viniyoga - tradition of Tirumalai Krishnamacharya 1980s: Rocket Yoga - Larry Schultz 1982: Forrest Yoga - Ana T. Forrest 1986: Jivamukti Yoga - David Life and Sharon Gannon 1992: Isha Yoga - Sadhguru Jaggi Vasudev 1995: Power Yoga - Beryl Bender Birch 1990s: Power Yoga - Bryan Kest 1997: Anusara Yoga - formerly John Friend Eclectic styles Several eclectic styles, some with Western audiences, are partially based on Hatha yoga: 1969: Kundalini Yoga - Yogi Bhajan 1975: Zen Yoga