An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
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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Every human spent about half an hour as a single cell.
144
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
On average, there's 100 billion neurons in the human brain.
83