Eclipsia — Come home to your biology

Four windows

One star. Every system.

Sunlight isn't a vitamin — it's a signal. The same star runs different programs, and which one is running depends on where it sits in the sky.

Morning · Eyes

Circadian

Low morning light reaches your eyes and sets your master clock — the timing under your sleep, mood and energy.

Midday · Skin

Vitamin D

Skin makes vitamin D only when the sun climbs past 45°. Low sun can't — the atmosphere filters the UVB away.

Low sun · Vessels

Cardiovascular

Daylight UVA frees nitric oxide from the skin; researchers link it to relaxed vessels — a gift even when it's too low for vitamin D.

Night · Darkness

Restoration

When the light leaves, the night begins its own work. Real darkness is a window too — the one most never fully close.

The Eclipsia prototype — a black wrist-worn case with an exposed sensor board and a lit indicator.

Prototype · Coimbra, August 2026

The instrument

Everything above was worked out. None of it was measured.

The wearable measures it. What light actually reaches you, and how much of a day goes by indoors without you perceiving it.

That's the part nobody can feel. Not the hour you spent outside — the ones you didn't.

The study

A clinical study is board-authorised at ULS Região de Leiria — a three-arm, sixty-day trial measuring serum vitamin D at the start and at the end. Enrolment opens in 2027.

Ethics opinion Parecer 44/CEULSRL/2026 · Dept. Dermatology, ULS Região de Leiria

The Third Wellness Revolution

Start the way back.

Sleep had its revolution. Movement had its. Light is the one still missing — the signal underneath all of them. The first bands ship to the people who join early.

From Portugal, with Love.