There are on average 32 million bacteria on every square inch of the human body.
Fingernails grow faster than toenails.
Fingerprints apart from being used for identification provide traction for the fingers to grasp things.
If the small intestine is stretched, it would elongate to a length of 22 feet.
You will die of carbon dioxide poisoning if you are locked in a completely sealed room rather than oxygen deprivation.
It takes 17 muscles to smile and 43 muscles to frown.
While chewing, jaw muscles provide about 200 pounds of force to bring the back teeth together.
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