We also found that a modest exercise program equivalent to a brisk 30-minute walk six times a week can prevent accumulation of visceral fat, while even more exercise can actually reverse the amount of visceral fat.

In my opinion, you either realize that exercise is really good for you and you make it a No. 1 priority, or you don't.

In our study, the control group that did not exercise saw a sizable and significant 8.6 percent increase in visceral fat in only six months.

I'm almost convinced that dieting is totally useless.

We believe that these results shine a clear spotlight on the high costs Americans are paying for their continued inactivity. I don't believe that people in general have gotten lazier -- it's more that they are working too hard or are at their desks working on computers with fewer opportunities for exercise. The situation is out of balance.

I exercise six days a week for one hour in the morning.