This DVD is the cardio component of your workout and is designed to build up your stamina, keep your energy up and help make your workout fun while you are learning these dances. It is a great introduction to learning dance aerobics and mimicking her dance moves as you gain strength and build up your stamina. Cardio is just as an important component as your muscular structure work and Tracy’s dance DVDs should be used in conjuction with either the Mat DVD or the Perfect Design Series.