結果 : average sleep hours for 4 year old
0:41

How many hours of sleep a night do I need?

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Mayo Clinic Minute: How much sleep do kids need?

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Science Explains How Much Sleep You Need Depending on Your Age

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Why 4 Hours Of Sleep Is Terrible For You — Even If You Don't Feel Tired

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Kids and Sleep: Setting a Sleep Schedule

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Not enough sleep may harm children’s developing brains

WXYZ-TV Detroit | Channel 7
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I Can't Sleep for More Than 4 Hours a Night - Why? | This Morning

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Yoga Guru - Hansaji | How many hours should you sleep?

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How old is too old for your child to sleep in bed with you? Expert advice for parents

WKYC Channel 3
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Study helps explain sleep problems in the elderly

Sunnybrook Hospital
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How less sleep impacts a child's brain

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Science Explains How Much Sleep You Need Depending on Your Age

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What Happens to Your Body on Little Sleep?

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