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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The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
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
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
There's 100 trillion good bacteria living in your body.
17