Commonly used nutritional supplements by athletes include protein powders, creatine, and branched-chain amino acids (BCAAs). Protein powders, especially whey and casein, help athletes meet their daily protein requirements to support muscle recovery and growth. Creatine is known for enhancing strength and explosive performance during high-intensity training. BCAAs may reduce muscle soreness and improve recovery time after workouts. While these supplements can be beneficial, it is crucial for athletes to consult with healthcare professionals for personalized advice regarding their use and potential dietary needs.