This answer is from How much would it cost to purchase enough calories at McDonald's to equal the calories used in picking up a penny?
Erin said
Well, housecleaning is probably the closest activity to picking up a penny, and that burns about 100 calories per hour. And a Big Mac is 540 calories. So you could pick up pennies for almost six hours straight before you burned off a Big Mac. I don't think you could buy anything at McDonald's that would be as few calories as you expend in picking up just one penny.
