Why You Get Sleepy
What your body does to bring on sleep, and what happens once you're there
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Wren: 26 min · Hollis: 29 min
See the appChapter 1 · Wren · 6:00
Chapter 1 · Hollis · 6:55
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Continue in the appYour chapters
The jar and the clock
sleep pressure, circadian rhythm
The keeper of the hours
adenosine, suprachiasmatic nucleus, two-process model
A note goes round the inn
melatonin, pineal gland, body temperature
Slipper's rounds
sleep cycle, light sleep, deep sleep, REM sleep
The keys on their hook
the wind-down