A body-part-targeted workout with a unique twist ? each 10-minute segment also includes a complimentary cardio element (e.g. the ?Leg Definer? segment alternates squats and lunges with plyometric aerobics). This aero/tone interval technique keeps you burning calories as you tone specific ?problem areas.? Each segment has a body-part focus: legs, arms, upper/lower, abs and buns. But they?re all different. Some emphasize the cardio, others the toning. Some feature short intervals, others have longer progressions. Some are mostly standing, others are mostly floorwork. Requires 3 to 10 lb. dumbbells. One-on-one instruction by Emily Welsh and Rebekah Sturkie.