Sure, you can use commercial breaks for quick trips to the fridge. But those 15-plus minutes of ad time per hour are a great opportunity to burn calories. The moves below require no special equipment—just the floor space in front of your TV.
By Polly Brewster
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For side plank, face the television, propping yourself up on your bottom forearm. Hold for 30 seconds, working up to two minutes. Repeat on the other side.