On average, there's 100 billion neurons in the human brain.
83
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Ingrown toenails are hereditary.
15
Common pesticides such as roach, termite, and flea insecticide can be found in the bodies of the majority of Americans.
11
One quarter of the human brain is used to control the eyes.
43