Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
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There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
More boys than girls are born during the day; more girls are born at night.
120
Babies' eyes do not produce tears until the baby is approximately six to eight weeks old.
58
The average person will go on a date at least 100 times before they finally marry.
33
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
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234