結果 : why do young people sleep more
8:35

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How Much Sleep Do Teenagers Really Need ... and Why? (Sleep Science)

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1:54

How Sleep Affects Your Brain

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Hypersomnia, Causes, Signs and Symptoms, Diagnosis and Treatment.

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Students Not Getting Enough Sleep.

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Science Explains How Much Sleep You Need Depending on Your Age

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Life Advice for 16-YEAR-OLDS.

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0:35

8 時間の睡眠は必要ではない理由を医師が解説します。

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8:46

Why More Young People Are Getting Cancer | Business Insider Explains | Insider News

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Why do some people need more sleep than others?

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0:47

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