A meadow of tall grass glowing in low golden-hour light

Promoters ofSunlight

Sunlight is one of the most powerful forces for human health — and most of us aren't getting nearly enough of it. At Sollees, we're on a mission to change that: by sharing the science, and helping people understand what natural light actually does for the body. Because the first step to living better is knowing what you've been missing.

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Articles

From the physics of light to the habits that change your health — everything you need to know about sunlight.

SeasonsWired for Sunlight, Living in the DarkA typical day for many people looks like this: wake up before dawn in artificial light, commute in a dark car or underground train, sit in an office under fluorescent lighting for eight hours, come home after sunset, and spend the evening in front of screens. Your circadian clock receives barely any signal from actual daylight. Researchers call this circadian misalignment, and its effects are far more serious than just feeling off. Les artikkelen

HealthThe Hidden Thing Sunlight Does to Your HeartRegular, moderate sun exposure is a health behaviour the body depends on.

Sol trigger huden til å produsere vitamin D

BiologyHow Sunlight Makes Vitamin DSunlight is not just pleasant to be in. For vitamin D, it is the starting point of a process your body cannot easily replace.

PhysicsThe Physics of Sunlight II: The Ghosts the Sun Sends Through YouNeutrinos tell us something strange and beautiful about what the sun really is.

PhysicsThe physics of sunlight I: The Electromagnetic CocktailBeyond the light you can see lies a spectrum of invisible energy — heat you feel but never see, and radiation powerful enough to reshape your biology.

HealthSun, Fear, and the Science We MissedAvoiding the sun might be shortening your life.

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Bridge the Gap

It started with a simple discovery: the light most of us live under barely scratches the surface of what sunlight does for the human body. Sunlight shapes our sleep, our mood, our energy, our health — and most of us are running on far too little of it. Sollees exists to bridge that gap, between the biology we were born with and the reality we live in. Everything we write, and the things we are building, comes back to that.

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The Sollees Monthly

A little sunlight on your screen

One video, once a month — exploring the science, biology and physics of sunlight. What light actually is, what it does to the human body, and why it matters more than most of us realize.

August 2026:

Modern humans spend nearly 90% of their time indoors, leading to a silent biological mismatch known as "Light Starvation". In this video, lighting expert David Fink breaks down the true anatomy of natural sunlight using the AM1.5G standard, exploring how its complex distribution of wavelengths impacts our sleep, mood, and overall health.