Celebs may get dolled up at night, but during the day they're often found sweating it out in t-shirts and leggings. Think you know which workout these fitness fiends choose for their calorie burn? Take this quiz and test your knowledge on their favorite way to exercise, and click through for pictures of these stars sporting their workout wear!
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Ashley Greene loves the gym.
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Amanda Seyfried credits this exercise with keeping her "long and lean."
3 of 8
One of Naomi Watts's favorite family exercises is:
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During her pregnancy, January Jones has been spotted regularly taking ____ classes.
5 of 8
Nicole Richie is a regular at this trainer's gym.
6 of 8
What is Reese Witherspoon's go-to exercise?
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What is one of Fergie's favorite outdoor workouts?
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One of Pippa Middleton's favorite exercises is:
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