The human brain has the capacity to store everything that you experience.
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Our eyes are always the same size from birth, but our nose and ears never stop growing.
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Poor eyesight (myopia) is associated with higher IQ.
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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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The human brain doesn't stop developing until about 25 years old.
102
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
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Every year your body replaces 98% of your atoms.
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