It's been said that your body continues to burn extra calories during the "recovery" period after an aerobic workout. While this fact is true, the amount of extra calories burned may be much less than you'd hope.

In general, you burn only about 15 extra calories during recovery for every 100 calories you expend during a workout. So if you burn 300 calories during a half-hour run, you'll net an extra 45 calories during recovery. (The amount of calories burned during a workout depends on its intensity and duration.)