We spend a lot of time sleeping (roughly one-third of our lives, according to the National Institutes of Health). But how much downtime do our brains really need? Experts discuss the links between sleep, memory and cognition, and why our sleep patterns change as we age.
- Sleep-Deprived Rats Take 'Brain Naps'
- TV And Smart Phones May Hamper A Good Night's Sleep
- Swaying Of Hammock Lulls Brain Into Deeper Sleep
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