Americans are preparing, perhaps by fasting, for Thanksgiving, which might as well be called the National Day of Eating. U.S. residents consume, on average, thousands of calories each Thanksgiving, oftentimes surpassing the recommended daily intake. Well, if you want to feel less guilty Thursday, here are some exercises you can use to burn off all those calories. (Note: This will help you burn off 2,509 calories worth of Thanksgiving goodness.)