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The lifespan of a human hair is 3 to 7 years on average. While you quite a few hairs each day, your hairs actually have a pretty long life providing they aren’t subject to any trauma. Your hairs will likely get to see several different haircuts, styles, and even possibly decades before they fall out on their own.
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You must lose over 50% of your scalp hairs before it is apparent to anyone. You lose hundreds of hairs a day but you'll have to lose a lot more before you or anyone else will ... pretty little head will have to disappear before your impending baldness will become obvious to all those around you.

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There are as many hairs per square inch on your body as a chimpanzee. Humans are not quite the naked apes that we’re made out to be. We have lots of hair, but on most of us it’s not obvious as a majority of the hairs are too fine or light to be seen.

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The human brain cell can hold 5 times as much information as the Encyclopedia Britannica. Or any other encyclopedia for that matter. Scientists have yet to settle on a definitive amount, but the ... of history, only takes up 70 terabytes, making your brain's memory power pretty darn impressive.

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Women's hearts beat faster than men's.The main reason for this is simply that on average women tend to be smaller than men and have less mass to pump blood to. But women's and men's ... heart attack, and many treatments that work for men must be adjusted or changed entirely to work for women.

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