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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On average, men's noses are 10% larger than women's.
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Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
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Babies crawl an average of 200m a day.
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Babies cry but they don't produce tears until one to three months after birth.
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More boys than girls are born during the day; more girls are born at night.
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A hard working adult sweats up to 4 gallons per day.
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