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

From Jessica Simpson's down-low exercises to Julia Roberts's water workout, get the scoop on how to look fab like the stars

TURN A NEGATIVE INTO A POSITIVE

Several months ago, Greek actor Scott Michael Foster learned he was allergic to gluten and had to cut out wheat and flour products from his diet. But the ABC Family channel star used the news as a chance to start eating healthier (mainly protein, vegetables and fruit) and exercising more rigorously. "My girlfriend introduced me to spinning," he says, "and the weight just fell off." Now 15 lbs. lighter, "I have a lot more energy and I feel great." Get details about what going gluten-free means on Health.com. – Ulrica Wihlborg