Light as Medicine
Light controls your biology
Beyond circadian rhythm, specific light wavelengths (red, near-infrared) penetrate tissue and boost mitochondrial function — a field called photobiomodulation.
Match the light to its effect
Connect each light type to its biological impact.
This step is interactive — open the Thier app to try it.
Morning sunlight outranks every device
5-10 minutes of natural sunlight within an hour of waking — even on a cloudy day at ~10,000-50,000 lux — anchors the circadian rhythm and produces a cleaner cortisol curve than any lamp. Indoor lighting peaks at ~500 lux. The strongest signal nature gives your master clock is the contrast between morning sunlight (very bright, blue-shifted) and dim evening (warm, red-shifted). Match it.
Red light therapy — what it does + doesn't do
Tap each claim.
This step is interactive — open the Thier app to try it.
Evening light hygiene
Tap each habit — most people do the opposite.
This step is interactive — open the Thier app to try it.
Key Takeaway
Morning sunlight is the #1 light hack. Red/NIR light therapy is promising for skin, joints, and energy but requires the right dose and wavelength.