Glutamine

Glutamine is the most abundant amino acid found in the human body and is arguably the most important in the process of building muscle and gaining strength. It can be found naturally in food sources such as beans, poultry, fish and dairy products, but in order to consume a highly beneficial amount you should probably consider buying it in powdered form as a nutritional supplement. Most serious weightlifters and bodybuilders would consider glutamine as one of the most important supplements out there, and for good reason.