Yawns are more contagious among people with closer relationships.
163
Obsessive nose picking is called Rhinotillexomania.
101
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
A person can live without food for about a month, but only about a week without water.
156
Pain occurs when sounds are above 130 db.
124
The average sperm cell swims at 8 inches per hour.
4
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161