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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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
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
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Your thumb is about the same size as your nose.
124
Your body is creating and killing about 2.4 million red blood cells per second.
17
Chewing gum boosts your brain power.
285