The human bone. especially the femur.is about four times stronger than concrete.
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When you blush, your stomach lining also reddens.
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You go to sleep and wake up to two different sizes, being tallest right after getting out of bed but shrinking during the day by being weighed down by the forces of gravity.
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In a female's ovaries. there are over 500,000 eggs but only 400 of them will ever get thechance to create a life
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The air from a sneeze can travel at unbelievable speeds of 100 mph or more.
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Your nose has quite the memory, and has the abilty to remember 50.000 different scents.