Description:
When you feel tired, your body is telling you that you need rest. Everyone needs sleep. Babies need lots of sleep. Grown-ups need less sleep. But no one can go for long without sleep. A team of scientists stayed awake for as long as they could to see what would happen. Read and find out wide-eyed facts about the science of shut-eye.
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Product notice
Returnable at the third party seller's discretion and may come without consumable supplements like access codes, CD's, or workbooks.
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