
Circadian biology from first principles. Fix your sleep, metabolism, and energy without drugs or confusion.
| Platform | Pricing | Freemium | Publishes | Daily | |
|---|---|---|---|---|---|
| Issues | 364 | Founded | 4 years ago | Last Issue | 15 days ago |
| Active | |||||

I’ve written a few articles on the concept of a “solar callus,” which just refers to a tan. You can refer to my second most recent below. I consider this article below one of my favorites because it walks you through the progressive magic o...
Every civilization that left written records also left a record of sun worship.
Modern dermatology treats this as superstition, a primitive reflex that science eventually corrected. The opposite is true. Pre-modern cultures observed somet...
Human beings evolved under an extraordinarily predictable environmental rhythm where we received bright, spectrally rich days followed by nights in which the retinal light signal fell dramatically.
Modern life has inverted that relationshi...
Every week, the sun rises later and sits lower.
Your morning light gets weaker right when your circadian clock system needs it most.
On November 1st, the clocks fall back across the United States and sunset drops another hour. The darkest...
2024 research connects seasonal light exposure, pupil biology, retinal dopamine, and the length of the developing eye
Circadian eyesight regeneration is a sub-topic which represents the cutting edge of my focus on circadian first principle...
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The writers behind this newsletter.
Your doctor is afraid of the sun. I'm not. Circadian biology from first principles to fix your sleep, energy, skin, and relationship with full spectrum sunlight.
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