F.lux! If you haven’t heard of it, be warned: once you get used to f.lux, you’ll probably find yourself annoyed whenever you use a computer that doesn’t have it.
The theory behind f.lux: your body’s internal clock is largely driven by daylight. Your monitor, and the bright, blue light it emits, can be perceived by your brain as daylight. Which is great… during the day.
At night, though, it mucks with your brain and makes it harder to get sleepy. F.lux gradually “warms” the overall color of your display around sunset, which, at least in theory, helps to counter the negative effects your monitor has on your sleep schedule.
Placebo? Perhaps! But a lot of people — myself included — have found f.lux to be surprisingly effective
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