Modern yoga consists of a range of techniques including asanas (postures) and meditation derived from some of the philosophies, teachings and practices of the Yoga school, which is one of the six schools of traditional Hindu philosophies, and organised into a wide variety of schools and denominations. It has been described by Elizabeth de Michelis as having four types, namely: Modern Psych osomatic Yoga, as in The Yoga Institute.

Modern postural yoga consists largely but not exclusively of the practice of asanas. There were very few standing asanas before 1900. By 2012, there were at least 19 widespread styles from Ashtanga Yoga to Viniyoga. These emphasise different aspects including aerobic exercise, precision in the asanas, and spirituality in the Haṭha yoga tradition. For example, Bikram Yoga has an aerobic exercise style with rooms heated to 105 °F