01/03/2013 08:47 am ET Updated Mar 05, 2013

The Secret Behind Office Workouts

Another holiday season has come to a close, and weight loss continues to dominate America's list of New Year's resolutions. If you're tempted to use the old "I'm too busy at work to go the gym" excuse, know that exercise doesn't need to be confined to after-hours. Here, P90X founder and celebrity fitness guru Tony Horton reveals some trusty workplace routines to keep you burning calories all day long.

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