1. Your nose can remember 50,000 different scents.
    ♦ SOURCE
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  2. Humans shed
    about 600,000
    particles of skin
    every hour.
    ♦ SOURCE
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  3. An adult human being is made up of around 7,000,000,000,000,000,000,000,000,000 atoms.
    ♦ SOURCE
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  4. A human baby has over 60 more bones than an adult.
    ♦ SOURCE
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  5. There are 100,000 miles of blood vessels in an adult human body.
    ♦ SOURCE
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  6. An average person produces about 25,000 quarts of saliva in a lifetime, enough to fill two swimming pools.
    ♦ SOURCE
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  7. Your body has enough iron in it to make a metal nail 3 inches long.
    ♦ SOURCE
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  8. We all have tiny mites living in our eyelashes.
    ♦ SOURCE
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  9. The strongest muscle in the human body is the masseter (jaw muscle).
    ♦ SOURCE
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  10. Sweat itself is odorless. It's the bacteria on the skin that mingles with it and produces body odor.
    ♦ SOURCE
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  11. Having excessive body hair is linked to a higher intellect.
    ♦ SOURCE
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  12. Ears and Nose never stop growing.
    ♦ SOURCE
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  13. Similar to fingerprints, everyone also has a Unique Tongue Print.
    ♦ SOURCE
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  14. When awake, the human brain produces enough electricity to power a small light bulb.
    ♦ SOURCE
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  15. Human Bones are
    ounce for ounce,
    stronger than steel.
    ♦ SOURCE
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  16. People with blue eyes have a higher alcohol tolerance.
    ♦ SOURCE
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  17. The human eye
    can distinguish
    about 10 million
    different colors.
    ♦ SOURCE
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  18. We spend about
    10% of our waking hours
    with our eyes closed, blinking.
    ♦ SOURCE
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  19. If the human eye was a digital camera it would have 576 megapixels.
    ♦ SOURCE
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  20. All of the bacteria in our body collectively weighs about 4 pounds.
    ♦ SOURCE
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  21. The human body produces about a litre (0.26 gal) of mucus per day.
    ♦ SOURCE
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  22. There are more than 100 types of cancers; any part of the body can be affected.
    ♦ SOURCE
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  23. Your heartbeat changes and mimics the music you listen to.
    ♦ SOURCE
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  24. Your brain uses 20% of the total oxygen and blood in your body.
    ♦ SOURCE
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  25. Your bones are composed of 31% water.
    ♦ SOURCE
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  26. There're more bacteria in your mouth than there are people in the world.
    ♦ SOURCE
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  27. Every day, your heart creates enough energy to drive a truck for 20 miles (32 km).
    ♦ SOURCE
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  28. If uncoiled, the DNA in all the cells in your body would stretch 10 billion miles, from here to Pluto and back.
    ♦ SOURCE
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  29. Most of the dust
    underneath your bed
    is actually your own
    dead skin.
    ♦ SOURCE
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  30. Within three days of death, the enzymes that once digested your dinner begin to eat you.
    ♦ SOURCE
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  31. Sleeping less than 7 hours each night reduces your life expectancy.
    ♦ SOURCE
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  32. In a lifetime, your brain's long-term memory can hold as many as 1 quadrillion (1 million billion) separate bits of information.
    ♦ SOURCE
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  33. The gastrointestinal tract is a 30-foot (9 m) tube running from your mouth to your anus.
    ♦ SOURCE
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  34. Your heart will pump nearly
    1.5 million barrels of blood
    during your lifetime, enough to
    fill 200 train tank cars.
    ♦ SOURCE
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  35. Your heart can keep beating even if it is separated from the body because it has its own electrical impulse.
    ♦ SOURCE
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  36. Your brain keeps developing until your late 40s.
    ♦ SOURCE
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  37. Our lungs and nasal passages have exquisitely tiny hairs called cilia that can "taste" bitter flavors.
    ♦ SOURCE
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  38. When you take one step, you are using up to 200 muscles.
    ♦ SOURCE
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  39. The chemical elements that make up your body are worth around US$160.
    ♦ SOURCE
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  40. Human fingers can feel objects as small as 13 nanometers. If your finger was the size of the Earth, you would feel the difference between houses and cars.
    ♦ SOURCE
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  41. The highest recorded body temperature in a human being was a fever of 115.7°F (46.5°C).
    ♦ SOURCE
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  42. The human heart is not on the left-hand side of the body; it's in the middle.
    ♦ SOURCE
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  43. Half of your genes describe the complex design of your brain, with the other half describing the organization of the other 98% of your body.
    ♦ SOURCE
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  44. Your taste buds are replaced every 10 days.
    ♦ SOURCE
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  45. The average age
    of a
    human fat cell
    is 10 years.
    ♦ SOURCE
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  46. There is no scientific evidence that shaving or waxing will make your hair come back thicker.
    ♦ SOURCE
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  47. If your stomach acid
    got onto your skin
    it would burn
    a hole in it.
    ♦ SOURCE
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  48. 1 in 10,000 people has their internal organs reversed or "mirrored" from their normal positions.
    ♦ SOURCE
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  49. Without your pinky finger, you would lose about 50% of your hand strength.
    ♦ SOURCE
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  50. Your lungs
    can hold up to
    5 minutes
    worth of oxygen.
    ♦ SOURCE
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  51. Scars continue to look the same year after year because, while skin cells are replaced periodically, the underlying collagen is not.
    ♦ SOURCE
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  52. The human body emits upwards of 10^6 biological particles per hour, creating a detectible microbial cloud into surrounding indoor air.
    ♦ SOURCE
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  53. A nanometre is about as much as your nails grows every second.
    ♦ SOURCE
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  54. Men's Testicles hang between the legs to keep cool because sperm dies at body temperature.
    ♦ SOURCE
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  55. 1 out of every 200 people have an extra rib.
    ♦ SOURCE
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  56. Your mouth is made of the same skin cells as a vagina.
    ♦ SOURCE
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  57. Muscle comes from the Latin musculus, which means "little mouse," because a flexed muscle was thought to resemble a mouse.
    ♦ SOURCE
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  58. While receiving a single tattoo temporarily weakens your immune system, receiving several tattoos over time could strengthen it.
    ♦ SOURCE
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  59. Liars blink less frequently than normal during the lie, and then speed up to around eight times faster than usual afterwards.
    ♦ SOURCE
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  60. You spend 10% of your waking life blinking.
    ♦ SOURCE
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  61. Some non-redheaded men have red beards because they have one copy of the MC1R gene. Two copies would make them fully redheads.
    ♦ SOURCE
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  62. More than 3% of people are born with phonagnosia: they can't recognize the voices of familiar people.
    ♦ SOURCE
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  63. A scientist cracked his knuckles on one hand for over 50 years to prove it did not cause Arthritis.
    ♦ SOURCE
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  64. Eating too much meat can accelerate your body's biological age.
    ♦ SOURCE
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  65. You can burn 20% more fat by exercising in the morning on an empty stomach.
    ♦ SOURCE
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  66. Cornflakes have more genes than people do.
    ♦ SOURCE
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  67. Humans have no more genes than worms.
    ♦ SOURCE
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  68. Our bodies consist of 60 out of 118 confirmed elements in the periodic table or 50.8% of the periodic table.
    ♦ SOURCE
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  69. Sex burns 3.6 calories a minute.
    ♦ SOURCE
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  70. A strong cough forces air out of the airways at speeds up to 1000 km/h, almost as fast as the speed of sound (1234 km/h).
    ♦ SOURCE
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  71. Your brain can recognize a sound 10 times faster than the blink of an eye.
    ♦ SOURCE
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  72. It takes about 0.2 seconds for your brain to understand the light that reaches your eye.
    ♦ SOURCE
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  73. Bras make breasts sag, according to a French study published in 2013.
    ♦ SOURCE
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  74. A woman's vaginal muscles can take up to 6 months to get back to their normal shape and size after childbirth.
    ♦ SOURCE
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  75. One prevailing theory as to why butt hair exists is that there's simply
    no significant evolutionary pressure against butt hair.
    ♦ SOURCE
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  76. Hearing is the fastest human sense. A person can recognize a sound in as little as 0.05 seconds.
    ♦ SOURCE
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  77. Breastfeeding actually changes the way a mother's brain works, making her more attuned to the child's crying.
    ♦ SOURCE
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  78. Ancient Greeks investigated animal structure and described the difference between arteries and veins around 500 BCE.
    ♦ SOURCE
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  79. The cost of sequencing a human genome went from US$100 million in 2007 to about US$3,000 in 2012.
    ♦ SOURCE
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  80. It takes about 0.2 seconds for your brain to recognize something touching your hand or foot.
    ♦ SOURCE
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  81. We can't digest grass because our bodies don't have what it takes to break down the cellulose found in the plant.
    ♦ SOURCE
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  82. A study found that right-handed individuals have better oral hygiene and the lower incidence of caries because of their better manual dexterity and brush efficiency.
    ♦ SOURCE
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  83. The big toe carries the most weight of all the toes, bearing about 40% of the load.
    ♦ SOURCE
    ♺ SHARE
  84. To enlist in the U.S. army, you have to have all ten of your toes intact.
    ♦ SOURCE
    ♺ SHARE
  85. Until the Renaissance, understanding of human anatomy was based on the dissection of animals, with human autopsies considered an affront in virtually all cultures.
    ♦ SOURCE
    ♺ SHARE
  86. Inner speech can clock in at 4,000 words per minute, 10X faster than verbal speech.
    ♦ SOURCE
    ♺ SHARE
  87. Some people never develop fingerprints.
    ♦ SOURCE
    ♺ SHARE
  88. Beer and vaginas have almost the same acidity levels, with an average pH of 4.5.
    ♦ SOURCE
    ♺ SHARE
  89. The iron in our blood and the calcium in our bones come from ancient explosions of giant stars.
    ♦ SOURCE
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  90. Borborygmus
    is the scientific name
    for when your
    stomach growls.
    ♦ SOURCE
    ♺ SHARE
  91. A transplanted great toe decreases in size up to one third when transplanted to the hand.
    ♦ SOURCE
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  92. Your hair contains traces of gold.
    ♦ SOURCE
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  93. Skulls are like fingerprints. Frontal sinus print is found to be unique to a particular individual.
    ♦ SOURCE
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  94. Oxford University discovered if someone prods one of your middle toes while your eyes are shut, most people can't tell which toe is being touched.
    ♦ SOURCE
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  95. 80% of what we learn is through our eyes.
    ♦ SOURCE
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  96. Eating garlic improves your body odour.
    ♦ SOURCE
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  97. You don't gain and lose fat as your weight fluctuates. Your fat cells just bigger or smaller.
    ♦ SOURCE
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