Regular exercise significantly improves sleep quality by helping to regulate circadian rhythms and reducing symptoms of insomnia. Physical activity increases the amount and quality of deep sleep, allowing the body to recover more effectively. Additionally, it can reduce levels of stress and anxiety, further promoting better sleep. However, it's best to avoid vigorous exercise close to bedtime, as it may have the opposite effect. Overall, incorporating regular exercise into a daily routine can lead to more restful and rejuvenating sleep patterns.