A person will create enough saliva to fill two average size swimming pools during his lifetime.
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Studies suggest that people who appear to be constantly distracted have more "working memory" and "sharper brains".
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Intelligent people have more zinc and copper in their hair.
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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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