The body cannot produce BCAA"s on its own, but must obtain through diet or supplementation. In order to get energy, the body can actually break down muscle in order to obtain BCAA"s. By supplementing BCAA"s during and after your workout, you can help prevent muscle tissue breakdown, which occurs as a natural part of metabolism. BCAA"s are essential for muscle repair, the maintenance of muscle tissue, and to preserve muscle stores of glycogen.