For the ability to recover and make proper gains, it is essential that the correct supplements are consumed to refuel your muscles with the nutrients they need. Protein is required as your muscles have been broken down and need amino acids to rebuild them bigger and stronger. Carbs are required to replenish glycogen that gets used up during a workout. As muscles are better primed for nutrient uptake Creatine can increase lean-mass gains faster. BCAA's turn on muscle protein synthesis. It also spikes insulin levels, helping to further drive more of those fast carbs, creatine, and amino acids into the muscle cells for enhanced recovery and muscle growth.