What would it take to burn off those holiday calories?

Next time you're considering whether to have a slice, or seconds, of Aunt Mary's pecan pie, consider this: To burn off the excess calories consumed by eating a small slice, you would have to run for an hour and 11 minutes, bike for 54 minutes or do yoga for 2 hours and 51 minutes. That's a lot of sweating, and I suspect not many people workout that much on a regular basis.

A candy cane, on the other hand, requires only 19 minutes of yoga to burn off. That fruitcake? 55 minutes of dancing should eliminate those calories. A cracker with a slice of cheese can by burned off with 8 minutes of biking, so if you consume 5 of those, you'll need to spend 40 minutes peddling it off. A serving of honey glazed ham translates into 26 minutes of swimming.

Are they worth it?