Health
Why screens can keep your brain in daytime mode
HERE’S THE INTERESTING PART
Your late-night Instagram habit is chemically convincing your brain that the sun is still up. The photoreceptors in your eyes are incredibly sensitive to the blue light emitted by screens, which halts the pineal gland from secreting melatonin. You are effectively forcing your circadian rhythm to stay in perpetual daytime mode, making deep sleep biologically impossible.
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