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blakeand blakeand
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4 years ago
What can be said about the optimal amount of sleep?


It is 10 hours per night.

It is between 10pm and 5am.

It is 8 hours per night.

IT varies from person to person.
Textbook 
Psychology: Themes and Variations

Psychology: Themes and Variations


Edition: 5th
Authors:
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IlovesushiIlovesushi
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4 years ago
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