Power yoga is basically known as the "yoga with brawn". This is the American version of ashtanga yoga, a kind of discipline that combines stretching, strength training, and meditative breathing.
A lot of poses look like basic callisthenics (push-ups, handstands, toe touches, and side bends). But the key to power yoga's sweat-inducing, muscle-building power is the pace. As a replacement for pausing between poses as you would in traditional yoga, each move flows into the next, making it a powerful aerobic workout.