Kriya Yoga (Kriya)
Ancient yogic method "rediscovered," renamed, expounded, and revived by Babaji, the guru of Lahiri Mahasaya. Lahiri Mahasaya popularized it in modern India, and Paramahansa Yogananda (1893-1952) advanced it in the United States. Kriya theory posits apana ("eliminating current"), prana (the life force), an omniscient "spiritual eye," and the transmutation of oxygen atoms into "life current."