Regular exercise has a positive effect on sleep quality, promoting deeper and more restorative sleep cycles. Physical activity helps to regulate the body's circadian rhythms, making it easier to fall asleep and stay asleep. Exercise may reduce symptoms of stress and anxiety that often interfere with sleep, leading to improved mood and relaxation. Additionally, engaging in moderate-intensity exercise earlier in the day can heighten alertness while aiding in fatigue, facilitating the natural transition to sleep at night. Overall, incorporating regular exercise can significantly enhance sleep quality.