You might not know this, but your smartphone emits a bright blue light which allows you to read what’s on the screen even during the brightest points of the day. But the light doesn’t turn off or adjust according to the hour of the day; it’s continually emitted, not only by our smartphones, but by our laptops, televisions, and other devices as well. The problem is that this light, which mimics the brightness of the sun, confuses your brain into thinking it’s daytime, even during the dead of night. This in turn stops your brain from releasing melatonin, the hormone which induces sleep, and prevents you from falling asleep.
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