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The Fit 5: Tips to Feel (and Look) Like a Star!

From Fergie & Matthew McConaughey's vitamin boost to Mischa Barton's circus routine, get the scoop on how to look fab like the stars

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SHAPE UP AFTER BABY

Since the birth of of 2-month-old daughter Megan Hope, Alison Sweeney has been trimming her baby weight by working out with EA Sports Active, a customizable fitness program for the Nintendo Wii. "It pushes me, and it's creative for me," says The Biggest Loser host about the system, which has more than 25 exercises and activities as well as a built-in journal to track her progress. "It really is like a personal trainer in a box." Learn some post-pregnancy power moves on Health.com! – Mark Dagostino