BCAA stands for Branched-chain amino acids: which prevent fatigue and improve concentration, reduce protein and muscle breakdown during and after an intense exercise. BCAA Post Workout after an intense workout has been shown to aid in maintaining muscle growth and energy required to reduce muscle breakdown. Containing: L-Glutamine for enhanced exercise performance, L-leucine for stimulated muscle growth, Vitamin B6 for energy and L-Valine for promoting muscle growth and tissue support.