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Shelby Harris, PsyD, DBSM@sleepdocshelbyInstagram

Hi, I’m Dr. Shelby Harris! I’m a Board-Certified Sleep Psychologist, here to help you learn healthy ways to

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what it claims

If you feel sleepy in the morning but alert in the evening, this is often due to a shift in your circadian rhythm or an accumulation of stress and stimulation in the evening.

holds up

This explanation aligns solidly with the principles of chronobiology. Science confirms that the circadian rhythm, our internal biological clock, regulates the propensity for sleep…

noli's read

This explanation aligns solidly with the principles of chronobiology. Science confirms that the circadian rhythm, our internal biological clock, regulates the propensity for sleep and varies naturally from one individual to another (chronotypes), a notion supported by numerous observational studies on sleep-wake cycles. The impact of stress and stimulation (blue light, mental activity) in the evening on melatonin suppression is also well-documented in meta-analyses on sleep hygiene. The advice is factual and avoids miracle promises. However, it should be noted that if this sensation persists, it may sometimes mask more specific sleep disorders, although the approach suggested here is an excellent basis for self-observation. The discourse is cautious and acknowledges the multifactorial nature of the phenomenon.

the sources

Claimed by Shelby Harris, PsyD, DBSM. Noli grades the claim, never the person.

Decoded by Noli · July 18, 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

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

Shelby Harris, PsyD, DBSM in the Register48 claims graded · solidity 96/100See their record →

More from Shelby Harris, PsyD, DBSM

Switching permanently to daylight saving time is biologically harmful because it causes sunrise to occur too late in winter, which disrupts the circadian rhythm.

holds upShelby Harris, PsyD, DBSM

Establishing permanent daylight saving time is harmful to our biology because it would delay the arrival of morning light, thereby disrupting our circadian rhythms, particularly in adolescents.

holds upShelby Harris, PsyD, DBSM

Frequent middle-of-the-night awakenings with an inability to fall back asleep are not insignificant; they often reveal underlying imbalances such as daily tension or nocturnal breathing disturbances that are essential to identify rather than ignore.

holds upShelby Harris, PsyD, DBSM

Others on this

Each 'sin' would correspond to a behavior that damages health (metabolism, stress hormones, inflammation), and its opposite (moderation, gratitude, generosity, discipline) to a behavior that supports it.

not provenzevinclark

It's not just "anxiety" but a nervous system stuck on alert — cortisol supposedly tightens the chest and shortens the breath; regulating the nervous system (not just "calming down") would quickly undo that.

mixedJenna

Dance, move, and shake your body to discharge built-up stress — like a gazelle that trembles for a minute or two after escaping a lion and then goes right back to grazing with no residual stress — and this self-regulation supposedly becomes "contagious," regulating your child's nervous system too.

Noli has read similar claims

Other advice in the Register that leans on the same research.

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 upDoctor Mike

Fix light, timing, temperature, and routine (sleep hygiene) before adding supplements or medication; he also recommends wearing blue-light-blocking glasses in the evening.

mixedThomas Paloschi MD

The quality of your sleep, the time you fall asleep, and your state upon waking are primarily determined by exposure to sunlight before 10 a.m. over the preceding 2 to 3 days.

holds upAndrew Huberman, Ph.D.

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