The average sperm cell swims at 8 inches per hour.
76
Enamel is hardest substance in the human body.
61
Chewing gum boosts your brain power.
285
Poor eyesight (myopia) is associated with higher IQ.
232
Your thumb is about the same size as your nose.
124
Yawns are more contagious among people with closer relationships.
163
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137