Optimize Your Biology
📉 Our Databases
We personally test and measure every product — spectral data, lux, flicker, and more — so you don’t have to guess.
☀️ SAD Lamps
Tested for m-EDI, lux, glare & spectrum
70+ lamps tested
👓 Blue Blockers
Spectral filtration data for 100+ glasses
120+ glasses tested
🌈 Smart Lights
Circadian-tunable lights for home setups
110+ lights tested
💡 Light Bulbs
CRI, R9, color temp, flicker index, every bulb measured
100+ lamps tested
😴 Night Oximeters
Filter and sort to find an overnight oximeter
15+ oximeters tested
⭐️ Our Reviews
Our hands-on “best of” picks, ranked and explained.
See all reviews
The few SAD lamps that earn their price
9 ranked picks
The pairs that filter what they claim
10 ranked picks
🌅 Sunrise Alarms
The wake-up lamps worth the price tag
4 ranked picks
Healthy full-spectrum bulbs we’d buy ourselves
5 ranked picks
😄 SAD Glasses
Light therapy glasses that actually earn it
3 ranked picks
📚 Learn
The science behind everything we test — in plain English.
See all guides
🌗 Circadian Rhythm
20 science-backed ways to fix your body clock →
🔆 Smart Light Sunrise
Turn your smart bulbs into a wake-up light →
🌈 Mimic Sunlight
Recreate real daylight where you live →
🌞 DIY Vitamin D Lamp
Build a UVB sun lamp at home for cheap →
📱 Block Blue on iPhone
The triple-click trick for a redder screen →
Guides to how you sleep — position, support, and the small changes that quiet snoring and ease aches.
May 14, 2023
February 16, 2023
November 14, 2021
