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Why you're always tired

2023-03-16 · Short · Ali · recording, 0:59 · watch on YouTube

Topic: Health, sleep and habits · mode: List of tips or lessons · tags: Evidence-based framing

Ali lists six sleep myths: avoiding blue light before bed, that timing does not matter, that everyone needs eight hours, waking at the same time every day, melatonin, and polyphasic sleep for productivity.

What is said

The parts of the video and what is said in each (★ — how much it matters to the video).

00:00:00 — Six myths about sleep

  • ★★ Ali calls avoiding blue light before sleep a myth: it came from the idea that blue light's higher energy stimulates the eye and keeps you awake, but there is very little evidence that this is biologically significant. — 00:00:00
  • ★★ Waking up at the same time every day is a good thing to do, Ali says, but not something to stress about: it is okay to have a lie-in sometimes. — 00:00:29
  • ★ Ali says there is some evidence that melatonin shortens the time it takes to fall asleep, but otherwise there is limited research suggesting it is actually good for you in the long term. — 00:00:29

In the description and comments

  • ★ Ali gives his interview with Professor Russell Foster of Oxford University, who studies circadian rhythms, as the source for these sleep myths, and calls Foster's book Life Time excellent. — creator comment · University of Oxford

Threads in this video

  • refine · Should you avoid blue light before bed? — Ali calls avoiding blue light before sleep a myth: it came from the idea that blue light's higher energy stimulates the eye and keeps you awake, but there is very little evidence that this is biologically significant. (00:00:00)

Mentioned

Central: blue light

Also: circadian rhythm · melatonin · polyphasic sleep

Only in the description or credits: Life Time · Russell Foster · University of Oxford

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