Yawns are more contagious among people with closer relationships.
163
One million Americans, about 3,000 each day, take up smoking each year. Most of them are children.
-86
Most people smile when they are frustrated, according to a study.
15
The most recorded orgasms in an hour were 134 for one woman and only 16 for a man.
192
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The first man to swim the length of Great Britain grew a beard to stop jellyfish stinging his face.
16