The human body is an amazing structure of a person. The body is made up of many different types of cells which together create tissues and organ systems. Even so, there are a lots of things to know about our body.

Check out these 40 unbelievable facts about the human body that will make your mind go crazy!

  1. An adult human body is made up of approximately 7 octillion atoms.
  2. Cornea is the only part of the human body in which there is no blood supply. So, it receives oxygen directly through the air.
  3. The ears and nose of humans never stop growing in their entire life.
  4. Just like fingerprints, every human’s tongue also has a unique print, which is different from each other.
  5. Human shed about 600,000 particles of skin every hour, or about 1.5 pounds every year. By the age of seventy, a person will loses about 105 pounds of skin.
  6. The average human produces about 25,000 quarts of saliva throughout the life, enough to fill two swimming pools.
  7. Humans have more bacteria in their mouth than the number of people living on Earth.
  8. Messages from the human brain can travel along nerves at about 200 miles per hour (or 322 km/h).
  9. The strongest muscle in the human body is the masseter or the jaw muscle.
  10. The highest body temperature ever recorded in a human being was a fever of 115.7 °F.
  11. A nose can recognize almost one trillion different scents.
  12. The brain is more active in the night than the day.
  13. The human heart beats more than three billion times in their average lifetime.
  14. By the age of sixty years, most people will lose half of their taste buds.
  15. A human sneeze can travel at a speed of 100 miles per hour.
  16. Stomach acid is so strong that it can even dissolve the metal.
  17. The largest cell in the human body is the female egg (or ovum) and the smallest cell is the male sperm.
  18. The human eye can recognize about 10 million different colors.
  19. If all the DNAs from any person’s cells are uncoiled, then it will spread to about 10 billion miles – that’s long enough to reach Pluto from the Earth and backwards.
  20. The human feet has about half a million of sweat glands that produce more than a pint of sweat every day.
  21. Women blink twice as much as men.
  22. Human bones are five times stronger than steel of the same weight. Even a cubic inch bone can bear the load of five pickup trucks.
  23. The largest muscle in the human body is the gluteus maximus.
  24. A person’s little finger (or pinky finger) contributes more than 50 percent of the hand’s strength.
  25. The longest and even the strongest bone in the human body is the femur. It can support almost 30 times the weight of a person’s body.
  26. The brain can recognize a sound in just 0.05 seconds, which is ten times faster than the blink of an eye.
  27. Teeth is the only part of the human body that can’t repair itself.
  28. A human skeleton keeps renewing itself every ten years, which means that every decade a person gets a new skeleton.
  29. Humans are the only species known to produce emotional tears.
  30. An adult human body contains about sixty thousand miles of blood vessels. The largest blood vessel is the aorta, which is just over an inch in diameter.
  31. A person uses up to 200 muscles to take just one step.
  32. Within half an hour the human body is capable of producing enough heat to boil a gallon of water.
  33. After giving birth, a woman’s vaginal muscles can take up to six month to get back to their normal shape and size.
  34. The brain does not actually feel any pain, even if the brain processes the pain signals.
  35. Babies blink only once or twice in a minute whereas an adult blinks about 10 times a minute.
  36. Every single person in the world has a different smell, except for the identical twins.
  37. A person takes up to 17 muscles to smile and 43 to frown.
  38. The best digital camera in the world has 200 megapixels, but the human eye would have 576 megapixels if it was a digital camera.
  39. Almost one billion cells in the human body are replaced every hour.
  40. A new born baby has about 305 bones, while an adult has just 206 – that means a baby has 99 bones more than an adult. This is because some of the bones join together, when they grow up.
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