Exercise can improve sleep quality by promoting deeper and more restorative sleep stages. Engaging in regular physical activity helps regulate the body's internal clock, leading to improved sleep patterns and reduced symptoms of insomnia. Exercise can also decrease levels of stress, anxiety, and depression, which are common barriers to restful sleep. Aerobic activities like running or cycling can particularly benefit sleep by increasing the time spent in deep sleep stages. However, timing is important; exercising too close to bedtime may have the opposite effect and disrupt sleep patterns.