Modern yoga is a wide range of yoga practices with differing purposes, encompassing in its various forms yoga philosophy derived from the Vedas, physical postures derived from Hatha yoga, devotional and tantra-based practices, and Hindu nation-building approaches.
The scholar Elizabeth de Michelis proposed a 4-part typology of modern yoga in 2004, separating modern psychosomatic, denominational, postural, and meditational yogas. Other scholars have noted that her work stimulated research into the history, sociology, and anthropology of modern yoga, but have not all accepted her typology. They have variously emphasised modern yoga's international nature with its intercultural exchanges; its variety of beliefs and practices; its degree of continuity with older traditions, such as ancient Indian philosophy and medieval Hatha yoga; its relationship to Hinduism; its claims to provide health and fitness; and its tensions between the physical and the spiritual, or between the esoteric and the scientific.