Sleep plays a vital role in good health and well-being throughout your life. Getting enough quality sleep at the right times can help protect your mental health, physical health, quality of life, and safety.The way you feel while you’re awake depends in part on what happens while you’re sleeping. During sleep, your body is working to support healthy brain function and maintain your physical health. In children and teens, sleep also helps support growth and development.Sleep helps your brain work properly. While you’re sleeping, your brain is preparing for the next day. It’s forming new pathways to help you learn and remember information.If you keep a regular sleep-wake schedule you’ll feel much more refreshed and energized than if you sleep the same number of hours at different times, even if you only alter your sleep schedule by an hour or two.Regular exercisers sleep better and feel less sleepy during the day. Regular exercise also improves the symptoms of insomnia and sleep apnea and increases the amount of time you spend in the deep, restorative stages of sleep.Adequate sleep is a key part of a healthy lifestyle, and can benefit your heart, weight, mind, and more.