The hike in your body temperature that comes with exercise may enhance sleep the same way taking a hot bath before bed does.
“The area of the brain involved in lowering body temperature is also involved in promoting sleep,” says Youngstedt.
“And running also has an anxiety-reducing, calming effect in general,” he says.
Is it OK to workout before bed?
Vigorous exercise—where you’re going so hard you can’t carry out a conversation—an hour before going to sleep can mess with your sleep. So your body won’t be as relaxed and ready to fall and stay asleep. Your best bet, then, is to keep your evening workout at a moderate intensity, she said.
Is it better to run at night or in the morning?
A run in the evening is a good way to relax. An easygoing endurance run can help you blow off some steam. Since your body is still in performance mode, you don’t need to warm up as much as in the morning. Plus, a relaxing evening run boosts your night-time fat burning.
Does working out late affect sleep?
Regular exercise reduces stress and anxiety, and generally improves sleep. But for some people, exercising within a few hours of bedtime may cause problems getting to sleep. For some people, late-day exercise isn’t a problem. It may require some trial and error to see how working out affects the quality of your sleep.