There's 100 trillion good bacteria living in your body.
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An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
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Your body is creating and killing about 2.4 million red blood cells per second.
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A human being loses an average of 40 to 100 strands of hair a day.
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If you are cold you are more likely to be hungry because you use energy to keep warm.
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Your thumb is about the same size as your nose.
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In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
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