1. The average red blood cell lives for 120 days. 2. There are 2.5 trillion (give or take) of red blood cells in your body at any moment. To maintain this number, about two and a half million new ones need to be produced every second by your bone marrow.That's like a new population of the city of Toronto every second. 3. Considering all the tissues and cells in your body, 25 million new cells are being produced each second. That's a little less than the population of Canada - every second ! 4. A red blood cell can circumnavigate your body in under 20 seconds. 5. Nerve Impulses travel at over 400 km/hr (25 mi/hr). 6. A sneeze generates a wind of 166 km/hr (100 mi/hr), and a cough moves out at 100 km/hr (60 mi/hr). 7. Our heart beats around 100,00 times every day. 8. Our blood is on a 60,000-mile journey per day. 9. Our eyes can distinguish up to one million colour surfaces and take in more information than the largest telescope known to man. 10. Our lungs inhale over two million litres of air every day, without even thinking. They are large enough to cover a tennis court. 11. We give birth to 100 billion red cells every day. 12. When we touch something, we send a message to our brain at 124 mph 13. We exercise at least 30 muscles when we smile. 14. We are about 70 percent water. 15. We make one litre of saliva a day. 16. Our nose is our personal air-conditioning system: it warms cold air, cools hot air and filters impurities. 17. In one square inch of our hand we have nine feet of blood vessels, 600 pain sensors, 9000 nerve endings, 36 heat sensors and 75 pressure sensors. 18. We have copper, zinc, cobalt, calcium, manganese, phosphates, nickel and silicon in our bodies. 19. It is believed that the main purpose of eyebrows is to keep sweat out of the eyes. 20. A person can expect to breathe in about 40 pounds of dust over his/her lifetime. 21. There are more living organisms on the skin of a single human being than there are human beings on the surface of the earth. 22. From the age of thirty, humans gradually begin to shrink in size. 23. Your body contains enough iron to make a spike strong enough to hold your weight. 24. The surface area of a human lung is equal to that of a tennis court. 25. Most people have lost fifty per cent of their taste buds by the time they reach the age of sixty. 26. The amount of carbon in the human body is enough to fill about 9,000 'lead' pencils. 27. One square inch of human skin contains 625 sweat glands. 28. When you blush, your stomach lining also reddens. 29. The human body has less muscles in it than a caterpillar. 30. If you could save all the times your eyes blink in one life time and use them all at once you would see blackness for 1.2 years! 31. The life span of a taste bud is ten days. 32. It's impossible to sneeze with your eyes open. 33. Give a tennis ball a good, hard squee ze. You're using about the same amount of force your heart uses to pump blood out to the body. 34. The aorta, the largest artery in the body, is almost the diameter of a garden hose. 35. Capillaries, on the other hand, are so small that it takes ten of them to equal the thickness of a human hair. 36. Your body has about 5.6 liters (6 quarts) of blood. This 5.6 liters of blood circulates through the body three times every minute. 37. The heart pumps about 1 million barrels of blood during an average lifetime--that's enough to fill more than 3 super tankers. 38. Babies start dreaming even before they're born. 39. The human body can function without a brain. 40. Humans are the only primates that don't have pigment in the palms of their hands. 41. 10% of human dry weight comes from bacteria. 42. There is more bacteria in your mouth than the human population of the United States and Canada combined . 43. Every square inch of the human body has an average of 32 million bacteria on it. 44. A fetus acquires fingerprints at the age of three months 45. You sit on the biggest muscle in your body, the gluteus maximus a.k.a. the butt. Each of the two cheeky muscles tips the scales at about two pounds (not including the overlying fat layer). 46. The tiniest muscle, the stapedius of the middle ear , is just one-fifth of an inch long. 47. The average human head weighs about 10 pounds. 48. The average human brain weighs three pounds. 49. The DNA helix measures 80 billionths of an inch wide. 50. Your eyeballs are three and a half percent salt. Source
1. Human bone is as strong as steel but 50 times lighter. 2. Bones make up only 14% of our weight 3. The brain is faster than a super computer processing billions of signals per second. Vishwanath Ananad the Indian Chess grandmaster has many times beaten the computer at chess. 4. Seven out of ten people cross their left arm over their right 5. Your foot contains 25% of all the bones within your body. 6. Human eye is the only multifocus lens in the world which can adjust in 2 milliseconds 7. Human brain is the most powerful computer which has the processing speed of 3000+ Ghz 8. The gastric acid in your stomach is so powerful that it is able to eat away an iron table in about 5 minutes. 9. sperm containing the xy chromosomes to become a male can swim faster but not for as long as the female xx chromosomes. 10. The ears never stop growing through lifetime. 11. The heart is accually more in the middle, just off to the left. 12. Do you know every human spent about half an hour as a single cell
1. A childs ability to learn can increase or decrease by 25 % or more depending on whether the child grows up in a stimulating environment. 2. On an average a persons head has 100, 000 to 150, 000 hair. 3. A single hair has the ability to support up to 100 grams of weight and the whole hair has the ability to support up to 12 tones of weight. 4. The pigment of human hair is produced in the shaft of hair beneath the skin. 5. In lifetime, the human heart pumps about 1 million barrels of blood, which is enough to fill more than three tankers. 6. The width of an average human brain is 140 mm. 7. It takes 5- 30 seconds to chew food. 8. Swallowing of the food takes about 10 seconds. 9. The enzyme in the stomach that breaks down alcohol is produced less in men than women. 10. In a year on an average person sleeps for 122 days out of 365 days. 11. There are around 9,000 taste buds present on the tongue. 12. Capillaries are so small that it would take ten of them to equal the thickness of a human hair. 13. It is impossible to tickle our selves. 14. In a human body, the small intestine is 21 feet and the large intestine is 6 feet long. 15. For every 24 hours, in a healthy adult, more than a gallon of water containing over an ounce of salt is absorbed from the intestine. 16. The right side of the human brain is responsible for self-recognition. 17. Men listen with the left side of the brain and women use both sides of the brain. 18. In a lifetime, the human kidneys clean over 1 million gallons of blood. 19. Identical twins have identical DNA but not identical fingerprints. 20. Babies recognize sounds while in mothers womb.
