When you're on the road you can't always get to a gym, but that doesn't mean you should throw in the towel when it comes to exercising. Do what Mary J. Blige does while traveling, and bring along a TRX suspension Home Training Kit ($170). It's a two-pound strap and handle weight-training system you can easily pack in your suitcase. Just attach it to a door or other sturdy base and you'll strengthen and tone your muscles by lifting and lowering your own body weight. Beverly Hills trainer Gregg Miele uses it to train both Mary and the fabulously fit Jennifer Lopez is also a fan.
They're not the only lovers of this piece of equipment. When she's not in the pool, Olympic swimmer Christine Magnuson uses TRX to strength train, since she doesn't always have access to a weight room. To see a video of how she uses the TRX,
Looks fun, doesn't it?