Interesting Facts about the Human Body

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1. Scientists say the higher your I.Q. The more you dream.


2. The largest cell in the human body is the female egg and the smallest is the male sperm.


3. You use 200 muscles to take one step.


4. Your big toes have two bones each while the rest have three.


5. A pair of human feet contains 250,000 sweat glands.


6. A full bladder is roughly the size of a soft ball.


7. The acid in your stomach is strong enough to dissolve razor blades.


8. The human brain cell can hold 5 times as much information as the Encyclopedia Britannica.


9. It takes the food seven seconds to get from your mouth to your stomach.


10. The average human dream lasts 2-3 seconds.


11. Men without hair on their chests are more likely to get cirrhosis of the liver than men with hair.


12. At the moment of conception, you spent about half an hour as a single cell.


13. There are about one trillion bacteria on each of your feet.


14. Your body gives off enough heat in 30 minutes to bring half a gallon of water to a boil.


15. The enamel in your teeth is the hardest substance in your body.


16. Your teeth start growing 6 months before you are born.


17. When you are looking at someone you love, your pupils dilate, and they do the same when you are looking at someone you hate.


18. Your thumb is the same length of your nose.


19. As humans grow older, the lens in the eye grows thicker. This is why people who once had perfect vision often need glasses in their 40s.


20. The circulatory system of arteries, veins, and capillaries is about 60,000 miles long.


21. Every day the average person loses 60-100 strands of hair.


22. One human hair can support 3.5 ounces. That’s about the weight of two full size candy bars.


23. The surface area of a human lung is equal to a tennis court.


24. On any given day, sexual intercourse takes place 120 million times on earth.


25. One out of every 2,000 newborn infants has a tooth when they are born.


26. Most men have erections every hour to hour and a half during sleep.


27. After eating too much, your hearing is less sharp.


28. Even small noises cause the pupils of the eyes to dilate.


29. Everyone has a unique smell, except for identical twins.


30. By the age of 60, most people will have lost about half their taste buds.


31. Humans can make do longer without food than sleep.


32. A human head remains conscious for about 15 to 20 seconds after it is been decapitated.


33. The tooth is the only part of the human body that can’t repair itself.


34. Three hundred million cells die in the human body every minute.


35. Humans shed about 600,000 particles of skin every hour.


36. Human lips have a reddish color because of the great concentration of tiny capillaries just below the skin.


37. The colder the room you sleep in, the better the chances are that you’ll have a bad dream.


38. Your ears secrete more earwax when you are afraid than when you aren’t.


39. Humans are the only animals to produce emotional tears.