Hawaii-based instructor Nicki Doane, who is one of the world's best known, leads viewers through an easy-to-follow beginner's routine that seamlessly translates Ashtanga's basic poses into a fluid, refreshing workout. Ashtanga yoga draws its precepts from the Hatha tradition, which marries breathing and movement. Although physically demanding, Ashtanga is ideal for those seeking a higher level of physical exertion.