Why Do We Need Sleep?

Jessi stayed up too late, so she's feeling really tired. Luckily, she isn't too tired to tell you all about what happens when we sleep and why we feel so terrible when we don't get enough sleep!
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SOURCES:
http://kidshealth.org/en/kids/sleep.html
www.sleepforkids.org
https://sleepfoundation.org/excessivesleepiness/content/why-do-we-need-sleep
https://sleep.org/

Видео Why Do We Need Sleep? канала SciShow Kids