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TIME YOUR WORKOUT RIGHT
To squeeze working out into her packed schedule, Michelle Obama rises at 5:30 a.m. and exercises "pretty religiously" with husband Barack Obama in the White House's private gym, she tells PEOPLE. But the first lady – who's earned accolades for her ultra-toned arms – admits she's not quite as diligent as the President. "I can skip a workout. He really can't," she says with a laugh. Discover the benefits of figuring out the best time of day to exercise for you on Health.com! – Serena Kappes and Sandra Sobieraj Westfall