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Stars' Workout Shout-Outs

Fergie, Kelly Osbourne and more are talking up their favorite fitness tricks and must-do routines

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MARISA REVS UP!

"I ride motorcycles and I box and I surf," says Victoria's Secret Angel Miller. Added get-fit incentive? "If you know that people are going to see you in a bikini, you're going to workout and you're going to eat right. It's a big motivator."