When you train as hard as you do, your muscles use the fuels adenosine triphosphate (ATP) and phosphocreatine (PC). As this fuel breaks down it creates a build-up of acid in your muscles, this is the burn you feel at the end of a set. Bullet Caplet Technology - 3 Stage Disintegration Process Agent-M is transported using Bullet Caplet Technology, which is a proprietary innovation exclusive to Fusion Bodybuilding. This allows immediate and accurate dosing, making sure the ingredients work together as designed. Scientific studies suggest Agent-M helps accelerate muscle growth. It may help reduce post-training muscle soreness, putting your body in the right state to build more muscle faster. By combating muscle soreness, it keeps your muscle bellies healthy and growing. Agent-M is your muscle mechanic.