There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
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People who sleep late have more mental stamina and can outperform early risers.
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There's an isolated tribe in Zimbabwe where the people have only two toes, dubbed the 'ostrich people'.
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The average person's skin weighs twice as much as their brain.
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A person can live without food for about a month, but only about a week without water.
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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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