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. The damage from sleep
deficiency can occur in an instant (such as a car crash), or it can harm
you over time. For example, ongoing sleep deficiency can raise your risk
for some chronic health problems. It also can affect how well you think,
react, work, learn, and get along with others.
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