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How Much Sleep Do I Need?

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Simple Answer

How much sleep you need depends on your age, health, lifestyle, and sleep patterns. Most adults need about 7 to 9 hours each night. Teens need 8 to 10 hours, and children need even more. Newborns and babies need the most sleep, and some ages need naps too.

What It Means

Sleep helps your body and brain restore energy, learn, remember things, and stay healthy. Getting enough good-quality sleep can also help you feel rested the next day. It may help with mood, thinking, and daily life too.

When to Contact a Doctor

If you often have trouble sleeping, or if you often still feel tired after sleeping, talk with your doctor. You should also ask for help if you have trouble getting up in the morning, focusing during the day, or if you doze off during the day.

The amount of sleep you need is not the same for everyone. Good-quality sleep matters too, not just the number of hours.

Sources

This information is based on these free U.S. government medical sources:

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Why it matters

Sleep is when your body repairs itself and your brain stores memories. Too little sleep raises the risk of heart problems, weight gain, and low mood.

Quick tips

Most adults need 7–9 hours of sleep each night.
Keep a regular schedule — go to bed and wake up at similar times, even on weekends.
Avoid screens, caffeine, and heavy meals close to bedtime.
Keep your bedroom cool, dark, and quiet.

Have your own question?

This service provides general medical information and education. It does not diagnose medical conditions or replace care from a physician or other qualified healthcare professional. If you may be experiencing a medical emergency, call 911.