Why We Sleep: Unlocking the Power of Sleep and Dreams *

Author: Matthew Walker

Book length: 368 pages

Excerpt: A study found that time spent asleep helped cement newly learned information while an equivalent time spent awake was hazardous to recently acquired memories.

KUTUBNOTES

Test Your Knowledge

Recalling strengthens the memory.

3 questions
1. According to the source material, what is a documented health consequence of routinely sleeping less than six or seven hours per night?
2. Which statement best captures the complementary roles of NREM and REM sleep described in the notes?
3. Which evening behavior, according to the notes, most directly suppresses melatonin and delays sleep onset?

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