Protein is the building block of muscle and amino acids are the building blocks of protein. The three so-called branched-chain amino acids (leucine, isoleucine and valine) play an essential role in muscle repair but cannot be produced by the body itself. Therefore, they must be consumed from dietary sources. While animal protein sources contain some essential amino acids, plant-based proteins lack sufficient amounts for muscle recovery. Our delicious Perform product provides your body with a clean source of BCAAs without the unnecessary sugars and stimulants found in so many other pre-workout formulas.