The human brain is more active during sleep than during the day.
28
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
The human body contains over a billion miles of DNA.
147
Early American humans hunted car-size armadillos and used their shells for houses.
12
Only humans shed emotional tears.
331
Yawns are more contagious among people with closer relationships.
163
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
You can't tickle yourself.
29