Excess Belly Fat and What You Can Do : There are several ways to combat excess fat around your stomach. Using waist trimmer belts simply to hide and or hold in the fat is one way to fight the bulge. Another is using them to compress your midsection and increase heat in the concentrated area which in turn may help promote the burning of fat, especially while you are working out. Of course, there is also the tried and true method of a healthy diet and getting steady exercise.