The largest cell in the human body is the female egg and the smallest is the male sperm.
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Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Your body is creating and killing about 2.4 million red blood cells per second.
17
The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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