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Star Trainers' Get-Fit Tips

From Julia Roberts's fierce focus to Anna Paquin's True Blood workouts, celebrities' trainers give us the low-down on getting the stars in shape

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RIHANNA'S RIDE

"The RealRyder is one of my three top choices in training Rihanna," says Ary Nunez of the revolutionary stationary bike that provides a full-body workout. "We burn fat! We make muscle! But mostly? We have fun!"