After weeks of trimming a few calorieshere, exercising a little more there, you put on a pair of jeans, and like magic, the waist has grown. You button them up to behold a welcome space between your belly and the fabric. How did that happen?
With 66 percent of the adult American population either overweight or obese[source: Centers for Disease Control and Prevention], a lot of people are trying to drop some pounds. Through dieting, exercise, surgery or a host of other alternatives, they hope to reach the goal of a smaller body. But to where does that weight disappear when the hard work pays off?
The short answer is that our bodies convert molecules in fat cells to usable forms of energy, thus shrinking the cells. But getting this to happen isn't just about sweat bands and short shorts. Understanding how our bodies perform this tummy-trimming trick requires a little more detail.