Metabolism

Exercise raises your metabolism and causes an increased number of calories to be burned even when you're done. That means you can exercise and then sit and watch TV and you will be a calorie burning television junkie like me!
A pill can't make this happen even though there's a commercial that says it can, but exercise sure can. That's why I love to exercise first thing in the morning, plus you get it out of the way and it's not something you dread and put off.