Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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Males sweat 40% more than females.
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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.
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On average a woman has 4 sexual partners in her lifetime.
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Roughly a quarter of the world's people live in China.
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