If you're envying the six-pack abs on Jillian Michaels, trainer from NBC's The Biggest Loser and self-proclaimed "TV's toughest fitness guru," look no further than her Shape-Up Backside exercise DVD for an intense high-impact workout. Michaels keeps your body moving (though she herself skips out on half the exercises) with hammer curls, oblique raises, step ups, planks, and a move called The Superman destined to tone your back, biceps glutes, hamstrings and abs. There's a lower-level option, but Michaels likes to "kick your butt," as she says, to get you to feel the burn. Shape-Up Backside's DVD features include printable diet/exercise logs, nutrition tips and recipes. It requires two props: a bench-style exercise step and light dumbbells, which may make it difficult for beginners. But if you give it a try, even in the comfort of your living room you'll think you're in a gym -- trainer yelling in your ear and all.

Cardio Kick Box is a high-energy aerobic workout designed to keep you moving and boost your fat-burning capabilities while at the same time giving your muscles a day off from wither-training. Jillian recommends doing Cardio Kick Box once a week, in the middle of the week, to break up your regular exercise program. this program is to get out there and have some fun, and keep your body moving.