In the bodybuilding world, glutamine is known as one of the best supplements on the market. Glutamine is a "non essential" amino acid. Non essential does not mean that it is not essential, it means the human body produces it naturally. Sixty percent of our glutamine is found in the skeletal muscle, with the remainder residing in the lungs, liver, and stomach. Glutamine has a unique molecule structure with 2 nitrogen side chains. This makes glutamine the primary transporter of nitrogen in the muscle cells.Glutamine Benefits For Muscle Builders:Below are some of the direct roles in which glutamine can boost your performance and assist your body in building/repairing muscle... Stimulates muscle protein synthesis by donating nitrogen to build proteins Decreases muscle recovery time Increases growth hormone production and release Decreases muscle catabolism during exercise Increases endurance by replenishing glycogen under conditions of glycogen depletion Decreases the chances of illness/infection by boosting your immune system Prevents over-training from high loads and long duration activities To get these effects from glutamine supplements the glutamine intake must exceed the amount needed and produced by the body. How much glutamine you need depends on the physical activity and it's effects on the body.