Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
The human body contains over a billion miles of DNA.
147
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The average person's skin weighs twice as much as their brain.
131
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
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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