We've been aware for quite a while that many animals and plants have a natural bioluminescence. But just recently, Japanese scientists have proven that even we humans have a very faintbioluminescence as well.
As it turns out, the human body emits a very faint amount of light. So next time someone tells you that you're glowing, make sure they don't mean it literally! The quantity of light that we put out varies based on the time of day. We are dimmest in the evening andat our brightest in the afternoon.
Unfortunately, the brightness of our natural glow is about 1000 times weaker than the human eye can see. Interestingly, there is no correlation between body heat and illumination. Unlike a light bulb, the light that our cells emit is completely cold.
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