HISTORY OF YOGA

While the most ancient mystic practices are vaguely hinted at in the Vedas, the ascetic practices (tapas) are referenced in the Brāhmaṇas (900 BCE and 500 BCE), early commentaries on the Vedas. In the Upanishads, an early reference to meditation is made in Brihadaranyaka Upanishad, one of the earliest Upanishads (approx. 900 BCE). The main textual sources for the evolving concept of Yoga are the middle Upanishads, (ca. 400 BCE), the Mahabharata (5th c. BCE) including the Bhagavad Gita (ca. 200 BCE), and the Yoga Sutras of Patanjali (300 BCE-200 BCE). Several seals discovered at Indus Valley Civilization (c. 3300–1700 BC) sites depict figures in a yoga- or meditation-like posture, "a form of ritual discipline, suggesting a precursor of yoga" that point to Harappan devotion to "ritual discipline and concentration", according to Archaeologist Gregory Possehl.