BCAA supplements are nutritional products that provide branched-chain amino acids: leucine, isoleucine, and valine. These three essential amino acids play a major role in the muscle growth, recovery, and energy during exercise, and they must be obtained from food or supplements.

BCAA supplements are commonly used before, during or after workouts to:

1. Support muscle protein synthesis, especially through leucine
2. Reduce muscle protein breakdown during intense training
3. Improve endurance and delay fatigue
4. Support faster muscle recovery