Stars' Diet Secrets

Get the scoop on how Hilary Duff, Kate Hudson, Jessica Simpson and nine others stay healthy and look great. By Emily Fromm and Serena Kappes

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RACHEL MCADAMS

Red Eye star Rachel McAdams, 29, says her love for sugar helps keep her thin. "I drink maple syrup," she admits. "Then I'm hyper so I just run around like crazy and work it all off." The actress says being on the road all the time keeps her trim. "Running through airports with pounds of luggage – that's a good workout."