and from exercise releases endorphins and brings more oxygen to the braindoing it close to bedtime, but not also close—can help you get in the right mindset for sleep. A 2018 review on the daily Sports medicine found that nighttime exercise helped people fall asleep faster and spend more time in deep sleep stages, since it ended at least an hour before bedtime. Exercising in the evening can also be more physically rewarding, as research has found that it takes 20% longer to reach exhaustion at night than in the morning.
It’s worth noting that a person’s sleep habits, types of exercise, and age can affect this ideal exercise window. For example, Harris, a long-distance runner, says she used to have no problem running close to bedtime, but she stopped being able to train at night once she hit her 30s.
These days, you exercise in the morning, which neither helps nor hurts your quality of sleep. However, he cautions that people who have trouble sleeping through the night and tend to wake up too early should avoid morning workouts, as they can train your body to keep waking up at that time.
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