Legal performance enhancers include: Creatine: Helps with muscle energy and endurance. Protein Supplements: Aid in muscle recovery and growth. Beta-Alanine: Improves exercise performance by buffering acid in muscles. Branched-Chain Amino Acids (BCAAs): Support muscle recovery and reduce muscle fatigue. Caffeine: Enhances alertness and endurance. Nitric Oxide Boosters: Improve blood flow and muscle pumps. Multivitamins and Minerals: Ensure overall health and optimal performance. These supplements are widely available and legal, provided they are used as directed.