Power Yoga is a fairly new form of yoga, exploding in the early 90s. It is a free flowing and dynamic mix of postures from various traditions. You can definitely expect to sweat in a power class so bring a towel. Power Yoga tends to be more fitness-based and while it opens and closes with the usual warm-up and cool-down. Yoga is powerful in relieving stress and aids in musculoskeletal strength. It includes stretching, deep breathing and toning boosts energy levels and benefits circulation and flexibility..