The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
130
The smallest human penis ever recorded was just 5/8 of an inch long!
77
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
One quarter of the human brain is used to control the eyes.
43
In Japan, condoms are commonly sold 'door to door'!
54
About 400 different kinds of microbes live on and in the human body.
-3
The average sperm cell swims at 8 inches per hour.
76