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Otto · Brain, Behavior & Psychology

Why We Sleep

by Matthew Walker

Three key ideas

  1. Walker argues that sleep deserves protected time, not leftover time.
  2. NIH guidance generally recommends seven to nine hours of sleep for adults.
  3. Two processes shape sleep: a daily timing system and pressure that builds while you are awake.

The five 2-minute lessons

  1. 1.Sleep is a health need
  2. 2.Tired is not the same as ready
  3. 3.Time in bed is not sleep
  4. 4.Review habits, skip the magic
  5. 5.When sleep trouble stays

From the comic

Sleep gets whatever time survives my evening list. The list keeps recruiting new arms.

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