30 Minutes to Fitness: Circuit Burn With Kelly Coffey-Meyer

An intelligently sequenced aero/tone interval program that features four exercise types. It's all carefully designed to burn calories as it tones your body. You get two different circuits. Each uses a consistent four-segment format: athletic cardio, multi-muscle body-sculpting, shadow boxing aerobics and lower-body toning. You'll do each circuit twice. The second series is longer and more challenging (it also lets you use heavier weights). Kelly's cuing is always easy-to-follow, but the workout and transitions are fast — you'll need to pay attention. Has a bonus 6-minute ab section. Requires two sets of dumbbells (e.g. 3 lb. and 10 lb.).