Yoga (devanāgarī: योग) is a Sanskrit term derived from the root yuj, "to join, to unite, to attach", which can be interpreted as "union of ātman (the individual Self) with paramātma (the Universal Self)". It is one of the six darśanas (orthodox āstika schools) of Hinduism based on the Vedas, and prescribes spiritual practices performed primarily as a means to enlightenment.
Traditionally, there are four main paths to attain union, namely, karma yoga (through action), bhakti yoga (through devotion), jñāna yoga (through knowledge), and rāja yoga (through meditation). According to the late Yogatattva Upanishad, yoga is divided into four forms — Mantrayoga, Layayoga, Hathayoga and Rajayoga.
Scholarly research shows that Theosophy was the first movement that popularized yoga on a worldwide scale.
- Yoga at Theosopedia
- The Hatha-Yoga and Raja-Yoga of India by Annie Besant
- Questions Answered about Yoga Vidya by H. P. Blavatsky
- The Yoga Philosophy by H. P. Blavatsky
- Delight as a Form of Yoga by Radha Burnier
- The Universal Yoga Tradition by Radha Burnier
- Yoga-Practice in the Roman Catholic Church by Franz Hartmann
- Explorations: Meditation and Yoga by Kay Mouradian
- By What Knowledge is the Spirit Known? by Ravi Ravindra
- True and False Yoga by Arthur A. Wells
- Yoga in Daily Life by Ernest Wood
- Yoga: A Theosophical Perspective by The Theosophical Society in America
- Yoga - A Study and a Practice by The Theosophical Society in Australia
- An Introduction To Yoga by Annie Besant
- The Psychedelic and Yogic Pathways to Reality by Geoffrey Hodson
- Theosophy as a Path of Yoga by Pablo Sender
- K. Baier, "Yoga", Dictionary of Contemporary Esotericism (ed. E. Asprem), Leiden: Brill.