Yoga is a body of practice that spans two millennia and transcends the boundaries of any single religion, geographic region, or teaching lineage. In fact, over the centuries there have been many "yogas"--yogas of battlefield warriors, of itinerant minstrels and beggars, of religious reformers, and of course, the yogas of mind and body so popular today.
Patanjali (first century BCE or fourth century CE). Name of the author-compiler of the Yoga Sutra, as well as of commentaries on Panini’s Sanskrit grammar and the ayurvedic Charaka Samhita. According to twelfth-century Tamil temple traditions, Patancali was the name of a half-human half-serpentine incarnation of the great serpent Ananta; later south Indian scholars would go on to identify this mythic figure with the Patanjali of Yoga Sutra tradition.