The term 'Thermogenic' means 'tending to produce heat' and is commonly applied to drugs which increase heat through metabolic stimulation or to microorganisms which create heat within organic waste. It has to do with increased heat production by the body in order to maintain body temperature or as a result of food intake. When we eat, our body temperature tends to rise slightly to allow for digestion and the absorption of nutrients, and that way using between 5 and 10 percent of a meal's total energy. Therefore, as the name implies, thermogenic fat loss products raise your body temperature in order to burn more calories.