Natural light exposure
Natural light exposure is essential for healthy circadian rhythms and mood.
Strong consensus“it's really teaching us how critical it is to get outdoors and exposed to light like you are right now”
Circadian glasses
Circadian glasses help protect your rhythm from disruptive artificial light.
Strong consensusFor circadian rhythm protection.
The strongest voice
“usually considered like the yellow ones these are your daytime lenses from sunup to sundown this is what you wear when you endorse indoor sunglasses”
In their own words
One faithful sentence per source, linked to the moment it was said; quiet chips mark where money is involved.
a clinical nutritionist recommend
“Wearing orange toned blue blockers until sunrise is a non-negotiable strategy to manage light exposure.”
a clinical nutritionist · source video · 00:00:05
a registered holistic nutritionist recommend
“Yellow lenses block blue light up to 470 nm and help reduce eye strain and improve mood during screen use.”
a registered holistic nutritionist · source video · 00:12:30
a GP with a Master of Public Health recommend
“Yellow blue blockers help the nervous system return to a parasympathetic state and reduce brain fatigue from artificial light exposure”
a GP with a Master of Public Health · source video · 00:15:45
Worth discussing with your GP, especially if you take medication or are pregnant. Entrain describes what is publicly taught; it does not prescribe.
More from light and sun
Outdoor time
Spending time outdoors supports circadian rhythms, resilience, and mental well-being.
Strong consensus“when you spend extended time in the back country, say camping, like under the stars or in a tent, and we're disconnected from technology, I think it takes three three nights, three nights or four nights, and when you come back, your brain has actually reset and it's become a sponge again.”
Incandescent bulb
Incandescent bulbs are a gentle, low-blue light option for home lighting, supporting circadian health.
Strong consensus“Anywho, I buy all my incandescent bulbs from a specialist lighting shop they are the best.”