While We Sleep, Our Brains Are Hard at Work

Name: While We Sleep, Our Brains Are Hard at Work
Uploaded: 2014-09-03 15:00:00Z
Duration: 3 min 7 s
Channel: VOA Learning English
Description: What happens in the brain when we sleep? The answer may surprise you.

September 03, 2014

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While We Sleep, Our Brains Are Hard at Work

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What happens in the brain when we sleep? The answer may surprise you.

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While We Sleep, Our Brains Are Hard at Work

While We Sleep, Our Brains Are Hard at Work

See comments (7)