Anusara yoga is a modern school of hatha yoga established in 1997. Its founder, John Friend, derived his style from the Iyengar method of yoga and reintroduced elements of Tantra and Hindu spirituality into a more health-oriented western approach to Yoga.
The Anusara style emphasizes a set of 'Universal Principles of Alignment 'which underlie all of the physical asanas and are connected to philosophical aspects of the practice. According to the official Anusara Yoga website, the school's ideology is "grounded in a Tantric philosophy of intrinsic goodness".
The term "Anusara (a-nu-sar-a), means 'flowing with Grace,' 'flowing with Nature' and 'following your heart,'" as interpreted from the Sanskrit anusāra, meaning "custom, usage, natural state or condition".
Anusara Yoga places more emphasis on tantric philosophical concepts than many other forms of Hatha Yoga commonly taught in the West.