Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
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It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
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Approximately one-third of the population can't snap their fingers!
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47% of people have a nightmare at least once a month.
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About 2/3 of American men prefer boxers to briefs.
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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.
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