Pain occurs when sounds are above 130 db.
124
Yawns are more contagious among people with closer relationships.
163
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
On average a woman has 4 sexual partners in her lifetime.
-143
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
The average sperm cell swims at 8 inches per hour.
4
The human brain is more active during sleep than during the day.
28