Is Sleep Before Midnight Most Important?

This old adage:

“Every hour of sleep before midnight is worth 2 after midnight.”

…raises the question as to whether the notion that going to bed (and going to sleep) early is better for health can be proved. I believe the adage reflects a truism about resting hours that is supported fairly well in the scientific literature. In this video, I have a look at the scientific research and its context, the basics of the sleep cycles, REM and deep/slow-wave sleep, cortisol and melatonin and also the effects of late-onset sleep on health, mental health, performance, depression, anxiety, overweight and obesity.

Sorry about the flies! That’s Australia!

Time Stamps:
0:49 What the expression means
1:27 Sleep basics
3:43 Chart – Distribution of deep sleep and REM
3:56 The scientific literature – What it says about ‘late-onset sleep behaviour’
8:18 Cause vs correlation
8:49 Chart (again) – Deep vs REM

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#sleep #rem
What do you think of this video? Let me know: https://docs.google.com/forms/d/e/1FAIpQLSfc1_k8ghlC914Bi3S6fXDcNv0D8npKVnLYDUyqKoLA7q3QZg/viewform?usp=sf_link