L-Glutamine is the most prevalent amino acid and is present in considerable concentrations in the muscles.
In fact, glutamine accounts for nearly 60% of the total amino acid content in muscle.
It is categorized as a non-essential amino acid, but because it supplies fuel to your muscles, the need for glutamine rises in certain conditions, and our bodies are unable to manufacture adequate amounts. For example, after strenuous activity, glutamine levels are depleted because the body is put under stress, and muscles and tendons demand more of this amino acid. To reduce muscle breakdown, glutamine must be provided by food or supplementation.