Sleep significantly affects exercise performance by playing a critical role in recovery, muscle repair, and hormonal balance. Adequate sleep enhances cognitive function, which is important for focus and coordination during workouts. Lack of sleep can lead to fatigue, diminished strength, and decreased endurance, negatively impacting overall performance. Furthermore, sleep influences the release of hormones such as testosterone and growth hormone, essential for muscle recovery and growth. Prioritizing quality sleep can therefore enhance both physical performance and overall well-being in active individuals.