Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
The average person laughs 13 times a day!
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Babies that are breastfed are more likely to be slimmer as adults than those that are not breastfed.
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Boys who have unusual first names are more likely to have mental problems than boys with conventional names. Girls don't seem to have this problem.
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Thrity-five percent of the people who use personal ads for dating are already married.
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