How much sleep do you really need?

Title:
How much sleep do you really need?
Speaker:
Matt Walker
Description:

You know you need to get enough sleep, but the question remains: How much is enough? Sleep scientist Matt Walker tells us the recommended amount for adults and explains why it's necessary for your long-term health.

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Video Language:
English
Team:
closed TED
Project:
TED Series
Duration:
02:54
Format: HTML5
Primary
Original