Caffeine consumption among athletes varies significantly based on sport, performance goals, and individual tolerance. Some athletes use caffeine as a performance enhancer, as it can improve endurance and reduce perceived exertion. However, the impact of caffeine differs across individuals; factors such as body mass, timing, and source (e.g., coffee vs. supplements) affect its efficacy. Research indicates that moderate doses may enhance focus and reaction times, but excessive intake can lead to negative side effects such as anxiety and sleep disturbances, which athletes must consider for optimal performance.