The human immune system can recognize over 1 billion distinct antigens.
Fact #7244
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The human brain continues developing into your mid‑twenties.
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The human body is about 60% water.
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Stomach acid is strong enough to dissolve razor blades.
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Your heart creates enough pressure to squirt blood several feet.
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Queen lead singer Freddie Mercury was born with four extra teeth in his upper jaw giving him his distinct smile.
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The liver can regenerate itself — as little as 25% of the liver can regrow into a full organ.
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The heart can sometimes restart after stopping.
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The human body contains enough carbon to make about 9,000 pencils.
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