Caffeine has been shown to enhance fat-loss, maximize energy, increase performance in aerobic and anaerobic events, and works in synergy with other substances such as choline and acetyl l-carnitine (ALCAR). Caffeine is primarily used as a power and energy accelerant! It's perfect to super energize your body for powerful workouts. This fast-acting substance delivers the right molecular structure to your energy systems for maximum energy and power output. Caffeine is fast-acting because it stimulates the central nervous system so you're neurologically charged to increased levels of alertness and focus.