The largest cell in the human body is the female egg and the smallest is the male sperm.
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More people use blue toothbrushes, than red ones!
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Fingernails grow nearly 4 times faster than toenails!
30
When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
30
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
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.
21
Fingernails grow fastest on the hand you favor.
44