An exercise partner to get you out of bed on a winter morning or away from your desk helps ensure that workouts don't get skipped.

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He likes to take long breaks for exercise during the day and to tuck himself in bed by 10pm.

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Working out in the afternoon also requires a little less time stretching on the mat because your heart and muscles are more prepared for the stress of exercise than when you're fresh out of bed, Bryant says.

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