BCAA stands for Branched-Chain Amino Acids , which are three essential amino acids: leucine, isoleucine, and valine. They are called "branched-chain" due to their chemical structure that includes a branch off the main molecule. These amino acids are essential because the human body cannot produce them; they must be obtained through diet or supplements. BCAAs are crucial for muscle energy, protein synthesis, muscle recovery, and they play roles in regulating blood sugar levels and reducing exercise fatigue. They are metabolized mainly in muscles rather than the liver and are important in muscle maintenance and growth.

Key Points about BCAAs:

• Comprise leucine, isoleucine, and valine
• Essential amino acids that must be consumed via food or supplements
• Support muscle protein synthesis and prevent muscle breakdown
• Provide energy during exercise and aid muscle recovery
• May reduce fatigue by affecting brain serotonin levels

BCAAs are popular among athletes and people who engage in intense physical activity for their benefits in muscle building and recovery.