The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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The human brain doesn't stop developing until about 25 years old.
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Women buy four out of every 10 condoms sold.
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Your body is creating and killing 15 million red blood cells per second.
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Our brains have a negativity bias and will remember bad memories more than good ones.
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Your heart beats over 100,000 times a day!
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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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A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
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