Glutamine is one of the 20 amino acids and is considered to be one of THE conditionally essential amino acids, which means that under certain circumstances  the body cannot produce glutamine  and must be obtained from diet/supplementation. In most cases the body CAN produce glutamine but when athletes train, levels are depleted and increased glutamine intake may be required for various benefits. What source can I get my Glutamine from? Glutamine is found in many different foods with the highest levels found in grass-fed beef, bison, chicken, & free range eggs. Raw dairy products from grass-fed cows and goats are also very high in L-glutamine. It can also be found in various Glutamine based supplement products. What are the benefits of taking Glutamine? Glutamine has been linked to protein synthesis. It prevents your muscle from being catabolized (eaten up) in order to provide Glutamine for other cells in the body. Glutamine helps maintain cell volume and hydration, speeding up wound and burn healing and recovery. Glutamine benefits you by replenishing declining Glutamine levels during intense workouts. Research has shown Glutamine can help you produce growth hormone levels. A study has shown 2 grams of L-Glutamine increased growth hormones by over 400%. Glutamine may serve to boost your immune system. For bodybuilders, this is important since heavy workouts tend to greatly deplete Glutamine levels. (Glutamine is a primary energy source for your immune system.) Glutamine is one of the most important nutrients for your intestines. It has the ability to 'repair a leaky gut' by maintaining the structural integrity of the bowels. Bet you didn't know this: It can even cure ulcers! Studies have found that 1.6 grams of Glutamine a day had a 92% cure rate in 4 weeks. When should I take Glutamine? GrillaFitness.com recommends taking glutamine as an intra-workout which means you take the supplement DURING training in the form of a drink to keep levels of glutamine high and decreasing fatigue.