On average, there's 100 billion neurons in the human brain.
83
On average, someone in the US suffers a stroke every 40 seconds; someone dies every 3 minutes from stroke.
57
You inhale about 700,000 of your own skin flakes each day.
29
The male fetus is capable of attaining an erection during the last trimester.
75
In the average lifetime a person will breath in about 44 pounds of dust.
21
The tongue is the strongest muscle in the human body.
50
It takes 17 muscles to smile, 43 to frown.
65