Why calories count: 10 common myths busted
4. Myth: You can burn 300 calories in 15 minutes
Credit: Getty Images
We've seen such claims on the covers of women's magazines. But if you weigh 130 pounds, jumping rope or running upstairs nonstop for 15 minutes will burn off only 150 to 200 calories. You would have to be a lot heavier and do something much more vigorous to burn 300 calories in 15 minutes. (Photo by Justin Sullivan/Getty Images)
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