BCAA stands for Branched-Chain Amino Acids and is a mixture of three amino acids, including Leucine, Isoleucine, and Valine. Here is a description of BCAAs and some common uses:

Description: 

•Chemical properties: BCAA is a combination of amino acids, their molecular structure contains branched chain structure, hence the name branched chain amino acids. They are building blocks of proteins and, like other amino acids, are necessary to build muscle and tissue.

Purpose: 

1. Protein synthesis: BCAA plays an important role in protein synthesis. Leucine, in particular, is considered a major signaling molecule that promotes protein synthesis. Adequate intake of BCAAs can provide the amino acids your body needs, promote muscle protein synthesis and repair, and help increase muscle mass and improve athletic performance.

2. Muscle protection and recovery: BCAAs are thought to help reduce exercise-induced muscle damage and fatigue. After strenuous exercise, training, or prolonged physical activity, BCAA supplementation can reduce muscle pain and injury and promote muscle recovery and repair.

3. Increase endurance and delay fatigue: BCAA intake can provide an additional source of energy for exercise and delay the onset of muscle fatigue. In particular, isoleucine is used as an energy source during exercise, which can reduce the occurrence of central fatigue and improve athletic endurance and performance.

4. Prevent muscle breakdown: Under certain circumstances, such as prolonged dieting or strenuous training, the body may use muscles for energy, causing them to break down. The intake of BCAA can provide additional amino acid energy, reduce the occurrence of muscle breakdown, and protect muscle mass.

5. Promotes immune function: BCAA is also associated with immune function. They play an important role in immune cells that can enhance the function of the immune system, improve resistance, and help reduce the risk of infection and disease.