Cardio workouts are easy to understand: make large muscle groups work hard for a while and not only do you have a workout that begins to raise body temperature, getting you into the sweat zone fast, but you also have a workout that begins to make excessive demands on the lungs. And that's where all the magic that streamlines your body and gives you a strong, lithe look, happens. The Cardi Beast workout delivers. Add EC for ... you know, the extra goodness.
Extra Credit: 1 minute rest between sets.
