What is a potential risk of overexercising without proper recovery?

Overexercising without adequate recovery can lead to injury and burnout, which is why this is the correct answer. When individuals engage in excessive physical activity without allowing their bodies sufficient time to recuperate, they may experience a range of negative outcomes. Recovery is crucial for muscle repair, glycogen replenishment, and overall physiological balance. Without it, muscles, tendons, and joints may become overstressed, increasing the risk of injuries such as strains, sprains, and stress fractures. Furthermore, the continuous strain on the body without recovery can lead to mental and emotional fatigue, resulting in burnout, which affects motivation and performance.

In contrast, the other options highlight benefits that are less likely or impossible to achieve without proper support from recovery periods. While strength, endurance, flexibility, mobility, and muscle definition may improve with appropriate exercise programs, these gains can only be realized through a balanced approach that includes rest. Overexercising negates the body's ability to adapt and improve in these areas effectively.