In your lifetime you will produce around 10,000 gallons of saliva.

In your lifetime you will produce around 10,000 gallons of saliva

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A woman is actually born with all the eggs she will need during her

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A quarter of the bones in your body are in your feet

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The muscles in the eye are 100 times stronger than they need to be to

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It only takes your body around thirteen minutes to produce enough heat

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A healthy (non-colorblind) human eye can distinguish between 500 shades

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Blue eyes are the most sensitive to light, dark brown the least