Branched-Chain Amino Acids, or BCAAs, are essential amino acids that include leucine, isoleucine, and valine. They are called "branched-chain" due to their unique chemical structure. BCAAs are important for protein synthesis and can help reduce muscle breakdown during exercise, making them popular among athletes and fitness enthusiasts. These amino acids are primarily found in protein-rich foods like meat, dairy, and eggs. Additionally, BCAAs can be taken as dietary supplements to support muscle recovery and growth. They are particularly beneficial during intense workouts or when following a calorie-restricted diet.