Branched-Chain Amino Acid (BCAA) powder is a supplement that includes three essential amino acids: leucine, isoleucine, and valine. These amino acids are vital for protein synthesis and muscle maintenance. BCAA powder is often used by individuals involved in physical activities, particularly strength training and endurance exercises. Benefits may include improved muscle recovery, reduced muscle soreness, and enhanced exercise performance. BCAAs are also known to support the body in preserving lean muscle mass during periods of calorie restriction or intense training.