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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Children grow faster in the springtime than any other season during the year.
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If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
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More than half the population of Kenya is under the age of 15.
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Most people smile when they are frustrated, according to a study.
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In one day an average person will take about 18,000 steps.
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