It is almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
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There's 100 trillion good bacteria living in your body.
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All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
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Children are more allergic to cockroaches than they are to cats!
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The human brain is more active during sleep than during the day.
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When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
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Laughing could dramatically improve your health – and be as good for you as a deep state of meditation, researchers have found.
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