If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The human eye blinks an average of 4,200,000 times a year.
233
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The human body contains over a billion miles of DNA.
147
Only humans shed emotional tears.
331
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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