Agni Yoga disciplines which originated in ancient India. The term "Yoga" has been applied to a variety of practices and methods. In Hinduism these include Jnana Yoga, Bhakti Yoga, Karma Yoga, Laya Yoga and Hatha Yoga. The term "Rāja yoga" originally referred to the ultimate goal of yoga, which is Samadhi (Sanskrit: , ), but was popularised by Swami Vivekananda as the common name for "Ashtanga Yoga". In the Ashtanga Yoga tradition, "Samadhi" is the eighth and final limb identified in the Yoga Sutras of Patanjali. "Aum" or "Oṃ" (Devanagari: ), , is a sacred sound and a spiritual symbol in Hinduism,
Hinduism karma, cows and caste"; and Bhakti or devotional Hinduism, where intense emotions are elaborately incorporated in the pursuit of the spiritual. Michaels distinguishes three Hindu religions and four forms of Hindu religiosity. The three Hindu religions are "Brahmanic-Sanskritic Hinduism", "folk religions and tribal religions", and "founded religions. The four forms of Hindu religiosity are the classical "karma-marga", jnana-marga, bhakti-marga, and "heroism", which is rooted in militaristic traditions, such as Ramaism and parts of political Hinduism. This is also called virya-marga. According to Michaels, one out of nine Hindu belongs by birth to one or both of the Brahmanic-Sanskritic Hinduism and