Glutamine is the single most abundant free amino acid in the body & the greatest pool of it tends to be found in muscle. As one of the most important amino acids in the body, it plays a direct role in building lean muscle tissue (Kreider, 1999) By making sure your body has sufficient pools of glutamine available, particularly after exercise & before sleep, you are helping your body to build skeletal muscle. Intense training is known to compromise the effectiveness of the immune system. It seems that the well-known & often frustrating association between intense, especially prolonged, exercise & immune suppression may be linked with a depleted glutamine pool in the body.A number of studies have shown clearly that intense training, or over-training leads to lower blood levels of glutamine concentrations. There’s also some evidence to suggest that glutamine supplementation might enhance natural growth hormone levels. Growth hormone contributes to the muscle building & repair processes in the body & is strongly anti-aging, energy & immune system supportive.