It takes about one minute for a single red blood cell to travel around your entire body.

It takes about one minute for a single red blood cell to travel around

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Some people say that you only use around 10% of the power of your brain.

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Your teeth started growing six months before you were even born

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Your eyes can distinguish approximately 10 million different colors

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Biologists think that humans are the only animals who cry emotional

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Our eyes are made up of over 2 million working parts

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Sleep is so important to the brain that scientists believe you can only