ScreenTime Blue Blocking Screen Filter — iPhone
Adhesive screen filter that physically blocks blue and green light from your iPhone display — for evening use without dimming distortion.
~£19.95
Buy now → // 05 · REPAIR
Recovery
Using light to recover faster — sleep, red light and everything between.
Recovery is where light pays off. Sleep, driven by circadian timing, is the foundation; red and near-infrared light is the most promising add-on for tissue repair. Treat this hub as the bridge between the timing science and the devices — what to fix first, and what to layer on top.
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Key reading
Start here.
The Science · 5 min read
Does Erling Haaland wear blue light glasses?
Erling Haaland wears blue-blocking glasses every night and calls sleep the most important thing in the world. Here is what he actually does — and whether the glasses deserve any of the credit.
08 JUL 2026
The Science · 5 min read
Do blue light glasses actually work?
A closely-read verdict on blue light glasses — what the best evidence says about eye strain, sleep and athletic performance, and where the hype falls apart.
29 JUN 2026
The Science · 7 min read
Why do footballers wear blue light blocking glasses
Marcos Llorente played 26 straight matches in tinted glasses, and Erling Haaland publicly backed him. The story sits in a more interesting place than either the hype or the backlash admits — here is what the evidence actually shows.
27 JUN 2026
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The kit that fits
Reviewed for this topic.
Go 2.0 — Portable Handheld with Charging Dock
Pocketable red + near-infrared device for targeted recovery on the road, with a desk charging dock.
~£878
Buy now →
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See it in the field
How the pros use it.
Load
Why Esteban Ocon's Sunglasses Matter — and How Tom Clark Turned That Insight Into Phaze
Esteban Ocon's paddock sunglasses look like style, but they're the visible tip of a circadian performance system built around controlling light exposure — the same science coach Tom Clark has now productized into Phaze.
The Science
Does UVA light improve cycling performance? A closely-read verdict
A controlled trial in trained cyclists is often cited as evidence that sunlight boosts performance. Read carefully, it shows something more interesting — and more honest.
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Keep exploring