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Strategically increasing the amount of light I'm exposed to was a game changer.

Turns out we're bad at gauging how much light is in our environment. Few would suspect that the amount of lux we're exposed to indoors is often far less than 1% of the lux outside. A typical corporate office has under 500 lux, vs 50k+ midday-if you're at home and haven't put much thought into the lighting situation, the lux could be in the low double digits. You can get a free app "Lux meter" to measure yours now.

We evolved to be outside a lot, and light regulates aspects of our biology. We probably shouldn't stay two orders of magnitude beneath the factory recommended exposure levels for months at a time. Hence clinical or sub-clinical SAD,sleep and mood disturbances etc [see references].

One solution is high wattage LEDs: https://www.benkuhn.net/lux/

I've had several ~250w LEDs over the years (these are huge and actually draw 250w, they aren't 250w equivalent). 250w might be overkill, and 80w is fine for me and a lot more practical. If you get one , be warned that depending on the wattage you'll probably have to build your own stand for it as most fixtures aren't rated for that high wattage.

Related to light amount is of course light timing. This may be more important than getting a steadily high amount of lux during the day. Get lots of light in the morning, and not a lot at night (just low intensity bulbs, maybe just red ones, starting 1-2h after sunset is nice). That helped my sleep a ton. Check out Huberman LAb, he talks about light amount and timing ad nauseam.

[1] Office workers sleep better and are more active with more lighting: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4031400/

[2] "Day and night light exposure are associated with psychiatric disorders: an objective light study in >85,000 people" https://www.nature.com/articles/s44220-023-00135-8

[3] "Time spent in outdoor light is associated with mood sleep circadian rhythm related outcomes" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8892387/

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