50 Weird Facts About the Human Body

1.      The brain itself cannot feel pain.

2.      Neurons continue to grow throughout human life.

3.      Nerve impulses to and from the brain travel as fast as 170 miles per hour.

4.      Your brain uses 20% of the oxygen that enters your bloodstream.

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

6.      The brain is much more active at night than during the day.

7.      80% of the brain is water.

8.       The fastest growing nail is on the middle finger.

9.      The lifespan of a human hair is 3 to 7 years on average.

10.   Human hair is virtually indestructible.

11.   The largest internal organ is the small intestine.

12.   The human heart creates enough pressure to squirt blood 30 feet.

13.   The acid in your stomach is strong enough to dissolve razorblades.

14.   The human body is estimated to have 60,000 miles of blood vessels.

15.   You get a new stomach lining every three to four days.

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

17.   Women’s hearts beat faster than men’s.

18.   Scientists have counted over 500 different liver functions.

19.   It’s possible to survive even with the removal of the stomach, the  spleen, 75 percent of the liver, 80 percent of the intestines, one kidney, one lung, and virtually every organ from the pelvic and groin area.

20.   Sneezes regularly exceed 100 mph.

21.   Feet have 500,000 sweat glands and can produce more than a pint of sweat a day.

22.   The average person expels flatulence 14 times each day.

23.   During your lifetime, you will produce enough saliva to fill two swimming pools.

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

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

26.   The three things pregnant women dream most of during their first trimester are frogs, worms and potted plants.

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

28.   Babies are always born with blue eyes.

29.   Every human spent about half an hour as a single cell.

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

31.   If saliva cannot dissolve something, you cannot taste it.

32.   Your nose can remember 50,000 different scents.

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

34.   Nails and hair do not continue to grow after we die.

35.   Your eyes are always the same size from birth but your nose and ears never stop growing .

36.   Monday is the day of the week when the risk of heart attack is greatest.

37.   Over 90% of diseases are caused or complicated by stress.

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

39.   Babies are born with 300 bones, but by adulthood the number is reduced to 206.

40.   The strongest muscle in the human body is the tongue.

41.   The hardest bone in the human body is the jawbone.

42.   You use 200 muscles to take one step.

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

44.   Bone is stronger than some steel.

45.   About 32 million bacteria call every inch of your skin home.

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

47.   Humans shed and regrow outer skin cells about every 27 days.

48.   Every day an adult body produces 300 billion new cells.

49.   Every tongue print is unique.

50.   Your body has enough iron in it to make a nail 3 inches long.