During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
Human thigh bones are stronger than concrete!
63
A man's beard grows fastest when he anticipates sex.
239
Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine.
202
2 out of 3 adults in the United States have hemorrhoids.
7
About 400 different kinds of microbes live on and in the human body.
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When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
30