Caffeine consumption can enhance workout performance by increasing energy levels and reducing perceived exertion. It stimulates the central nervous system, leading to improved endurance, strength, and focus. Caffeine can also promote better fat oxidation during exercise, making it beneficial for both endurance athletes and those engaging in strength training. However, individual tolerance levels vary, and excessive intake can lead to negative side effects. A moderate dose taken before workouts typically maximizes its performance-enhancing effects without adverse reactions.