LIT contains several ingredients that may boost your metabolism, so let's cover the main ones to further explain how this happens. First, the caffeine content prevents the breakdown of a secondary messenger called cAMP which is responsible for converting carbs, fats, and protein into usable energy. Without a sufficient amount of cAMP available the body is more likely to store the carbs and fats as opposed to turning them into ATP (energy). LIT also contains Capsimax, a cayenne pepper extract, that boosts thermogenesis (production of heat). In other words, your body will burn more calories through heat production due to this ingredient. The other key ingredient in LIT, for metabolism support, is L-Carnitine L-Tartrate, a supplemental form of L-Carnitine which is an important fatty acid transporter. The body needs L-Carnitine present to shuttle fats into the mitochondria to be converted to energy (ATP), also known as oxidation. Lastly, LIT contains green coffee bean extract and TeaCrine (theacrine) to further boost energy levels and metabolism.