Creatine Phosphate System

The Creatine Phosphate System is a quick energy source used by muscles during short, intense activities like sprinting or heavy lifting. It involves a molecule called creatine phosphate stored in muscles, which donates a phosphate group to ADP (a form of energy) to rapidly regenerate ATP—the main energy currency of cells. This process provides immediate energy but is exhausted quickly, usually within 10 seconds, because creatine phosphate stores are limited. Once depleted, muscles rely on other systems for energy, making it ideal for short bursts of high-intensity activity.