The average sperm cell swims at 8 inches per hour.
76
One human hair can support 3 ounces.
191
The average person's skin weighs twice as much as their brain.
131
Your body is creating and killing about 2.4 million red blood cells per second.
17
The human body contains over a billion miles of DNA.
147
Your thumb is about the same size as your nose.
124
Chewing gum boosts your brain power.
285