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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Most people smile when they are frustrated, according to a study.
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More boys than girls are born during the day; more girls are born at night.
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Identical twins do not have identical fingerprints.
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According to the American Society for Microbiology, 90% of women and 75% of men wash their hands after using a public restroom.
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Children's sense of smell is better than adults'.
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Only about 2% of the world population has green eyes.
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