![Glutamine and Athletic Performance](https://www.thehulklab.com/wp-content/uploads/2023/04/prolab-glutamine-640x600.jpg)
Glutamine is a naturally occurring non-essential amino acid that is commonly stored in muscles and released into the bloodstream during times of physical stress. It is also a popular dietary supplement among athletes, who take it in order to prevent muscle breakdown and improve immune system functioning.