Why are most athletics records set by people in early adulthood?

Most athletic records are set by individuals in early adulthood due to a combination of physical peak performance, optimal recovery, and experience. During this period, athletes generally possess the best balance of strength, speed, and endurance, as well as the ability to recover quickly from intense training and competition. Additionally, years of training and experience contribute to skill refinement and mental resilience, enabling them to perform at their highest level.