Yawns are more contagious among people with closer relationships.
163
Approximately 4 to 5% of the U.S. population has one or more clinically significant phobias in a given year. Specific phobias occur in people of all ages. The average age of onset for social phobia is between 15 and 20 years of age, although it can often begin in childhood.
30
On average a woman has 4 sexual partners in her lifetime.
-143
It is estimated that at any one time, 0.7% of the world's population are drunk.
90
The average woman uses her height in lipstick every 5 years.
146
Women rate men more attractive if other women are looking and smiling at him.
17
Babies' eyes do not produce tears until the baby is approximately six to eight weeks old.
58