Incredible Facts: They Sound Wrong but Are Amazingly True

Written by Josefine Bagger Sommerlund

Apr.07 - 2025 3:22 PM CET

The human body is full of surprises – and much of what we think is impossible is actually completely natural.

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Get ready to be amazed! These wild body facts sound like something out of a movie – but they're absolutely real.

From glowing skin to a heart that can beat outside the body.

Your Stomach Produces New Mucus Every Day

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  • The stomach creates a fresh layer of mucus every 24 hours

  • This mucus protects against powerful stomach acid

  • Without it, the acid would start "digesting" your own stomach

Your Body Glows in the Dark

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  • Humans emit faint bioluminescent light

  • It’s 1,000 times weaker than the human eye can detect

  • The glow varies in intensity throughout the day

You Have More Bacterial DNA Than Human DNA

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  • Only about 43% of your cells are human

  • The rest are bacteria, viruses, and other microorganisms

  • These microbes are crucial for digestion and immune function

Your Heart Can Beat Outside Your Body

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  • The heart has its own electrical impulse

  • It can continue beating for a short time after removal from the body

  • This is useful in organ donation and scientific research

You Shed Millions of Skin Cells Every Day

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  • Around 30,000 to 40,000 skin cells fall off every hour

  • That adds up to nearly 4 kilograms (almost 9 pounds) of dead skin a year

  • Most household dust comes from dead skin cells

Your Nose Can Detect Over 1 Trillion Scents

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  • It was once believed humans could only detect 10,000 smells

  • New research shows the nose is far more complex

  • Your sense of smell is linked to both memory and emotion

Bones Are Stronger Than Steel

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  • Bone tissue is lighter than steel but five times stronger

  • A human bone can withstand up to 8,600 kg of pressure per square centimeter

  • At the same time, bones are flexible and hard to break

You Can Survive Without Many of Your Organs

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  • You can live with just one kidney, one lung, 75% of your liver, and even without a spleen

  • The body is excellent at adapting and compensating

  • Modern surgery takes advantage of this resilience