The term thermogenics refers to an increased production of heat in the body. Thermogenics are designed to increase metabolism. While nutrition and fitness are the cornerstone of weight management these supplements may be helpful to take your workout to greater heights. These burners crank up the heat and get the metabolism burning by using fat as an energy source. Ingredients capsaicin (chili peppers), L-carnitine, chromium polynicotinate, and B vitamins are a few of the ingredients many consumers add to their diet and exercise plan when they are looking to burn fat.