Chapter 7. Why We Sleep

7.1 Section Title

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Video: Why We Sleep

Why do we need to sleep?
This video clip explores what happens inside our brains while we’re asleep. Over the past 10 years, there have been advances in our understanding of the role of sleep on memory and health.

After you've watched the video, click the link below to answer questions about what you've learned.

Question 7.1

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Question 7.2

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Question 7.3

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Question 7.4

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