Shop till you drop the pounds —
When rifling through racks of clothes or bins of school supplies, know that an hour of shopping can burn about 180 calories. And if you go grocery shopping for that amount of time, all the heavy lifting can help you burn closer to 260 calories. Just make sure to avoid "shopping and eating at the same time," said Dr. Holly Lofton, director of the Weight Management Program at NYU's Langone Medical Center.