Creatine can be present in the muscles of a variety of species, including humans. It is a precursor to creatine phosphate, which serves as an energy storage compound in the muscles.
Creatine phosphate is a molecule with high energy bonds that aids in the maintenance of the ATP supply required for muscular contractions.
Muscle energy and endurance are improved, leading in muscle growth. Creatine is a natural substance found in many meals and is also retained in muscle tissue.
During aerobic activity or high-intensity sports such as weight lifting, sprinting, football, and so on, muscle contraction occurs without the use of oxygen.
Muscles metabolise or release energy via a chemical mechanism using the ATP molecule (Adenosine Tri-phosphate). For continuous maximum muscular contractions, stored ATP inside muscle has a 10 second supply and must be constantly re-synthesized.
Creatine is required for the chemical reaction that re-synthesizes ATP. The more creatine your muscles can carry, the more fuel you have for re-synthesizing ATP, resulting in explosive physical power, increased stamina, increased and greater intensity, and decreased muscular fatigue.