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Doctor Mike@doctormikeTikTok

If you’re trying to improve your sleep, start with a consistent bedtime routine 😴💤 …more

original sound — @doctormike

what it claims

To dispel the feeling of being exhausted but overstimulated at bedtime, adopt a regular and relaxing sleep routine (low light, calm sounds, no screens) coupled with a progressive light alarm.

holds up

The concept of the 'tired but wired' sensation linked to high evening cortisol levels is validated by observational studies published in *Psychoneuroendocrinology*, demonstrating…

noli's read

The concept of the 'tired but wired' sensation linked to high evening cortisol levels is validated by observational studies published in *Psychoneuroendocrinology*, demonstrating that a state of heightened alertness counteracts the sleep-onset signal. Regarding regularity, a 2020 systematic review in *Applied Physiology, Nutrition, and Metabolism* confirms that a stable sleep schedule supports general well-being, even if the overall strength of the evidence remains moderate. As for the use of progressive light to wake up, randomized controlled trials (such as the study by Thompson et al., 2014) prove that dawn simulation effectively reduces morning grogginess and boosts the feeling of physical fitness upon jumping out of bed. Conversely, the assertion that the body secretes adrenaline to maintain functioning during fatigue is slightly simplified, as this hormone reacts primarily to acute stress or performance anxiety rather than a simple misalignment of the biological clock. Finally, presenting the routine as a way to teach 'safety' to the brain is an excellent metaphor derived from the opinion of experts in behavioral therapy, although it lacks direct biological evidence.

the sources

  1. 1van Straten A, van der Zweerde T, Kleiboer A, et al. 2017
  2. 2Mindell JA, Williamson AA. 2017
  3. 3Zaccaro A et al. 2018
  4. 4Blume C, Garbazza C, Spitschan M 2019
  5. 5Brown TM et al. 2022
  6. 6He X, Pan B, Ma N, et al. 2025
  7. 7Santhi N, Thorne HC, van der Veen DR, et al. 2011

Claimed by Doctor Mike. Noli grades the claim, never the person.

Decoded by Noli · July 13, 2026 · the original post

What the graded evidence says

Evidence
A-
Effect
circadian phase / melatonin timing — morning light advances; evening light delays
Measured on
reviews + expert consensus

What’s uncertain

Core circadian physiology is very well established; specific lux targets less so.

Doctor Mike in the Register33 claims graded · solidity 92/100See their record →

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