Glutamine is the most common amino acid found in your body and is heavily metabolized during weight training and endurance activities. Supplementation of 5-20 grams Glutamine, rapidly accelerates muscular growth and increases growth hormone (GH) levels. 5 grams in the morning, post-workout and before bed goes a long way in improving protein metabolism and accelerating muscle growth. Pair it up with some Taurine (the second most common amino acid in the body) and you’ve got yourself a very powerful amino acid stack.