90+ Unique Facts About The Human Body

Since we are still embryos, until our last breath, we will always be with our bodies. But how much do you really know your body? Here are some facts about the human body that you may not have known before:

1. The cornea of the eye is the only part of the body that does not receive a blood supply from the heart. It takes its oxygen needs directly from the air.
2. Your brain has a memory capacity of more than four terabytes of computer hard drives.
3. Babies aged 0 - 7 months have the ability to breathe and swallow at the same time.
4. Your skull is made of 29 different bones.
5. Signals sent by the brain through the nervous system travel at a speed of 274 km/hour.
6. Your brain generates more electrical signals than all the cell phones in the world combined.
7. The average human heart pumps 182 million liters of blood throughout its lifetime.
8. The average human body contains enough sulfur to kill all the fleas on a dog, enough carbon to make 900 pencils, enough fat to make 7 bars of soap, and enough water to fill a 50 liter jerry can.
9. About 50 thousand cells in your body die and are replaced by new cells when you read this sentence.
10. The human embryo has fingerprints since the third month of pregnancy.
11. A woman's heart beats faster than a man's.
12. A man named Charles Osborne had the constant hiccup for 68 years.
13. Right-handed people live an average of 9 years longer than left-handed people.
14. Two out of three people turn their heads to the right when kissing.
15. Most people forget 90% of their dreams.
16. The total length of all the blood vessels in your body is about 100,000 km.
17. In summer, humans breathe 33% more than in winter.
18. By the end of a person's life, they can remember an average of about 150 trillion pieces of information.
19. We lose 80% of body heat from the head.
20. When your face turns red from blushing, your stomach also becomes red.
21. Thirst occurs when you lose 1% of your body weight in water. Water loss of more than 5% can cause fainting, and more than 10% can cause death from dehydration.
22. There are at least 700 active enzymes in the human body.
23. Humans are the only living creatures that sleep on their backs.
24. Four year old's ask an average of 450 questions a day.
25. Not only humans, koalas also have unique fingerprints.
26. Only 1% of bacteria can cause the human body to become sick.
27. Everyone living on Earth can be placed into a cube with a side length of 1,000 meters.
28. The scientific name for the navel is the umbilicus.
29. Teeth are the only part of the human body that cannot heal itself.
30. On average, a person takes seven minutes to fall asleep.
31. Right-handed people chew most of their food on the right side of their mouth, while left-handed people do it on the left.
32. There are only 7% of left-handed people of the entire population.
33. The smell of apples and bananas can help a person lose weight.
34. If never cut throughout life, human hair can grow 725 kilometers long.
35. Of all the people who can move their ears, only a third can move just one ear.
36. During their lifetime, an average person accidentally swallows eight small spiders.
37. About 2 kg of your body weight are bacteria that live in your body.
38. 99% of the calcium contained in the human body is in the teeth.
39. Lips are hundreds of times more sensitive than fingertips.
40. Kissing increases heart rate by 100 beats per minute or more.
41. The total strength of the chewing muscles on one side of your jaw is 195 kilograms.
42. People transmit 278 different types of bacteria to other people when they kiss. Fortunately, 95% of them are harmless.
43. Parthenophobia is the fear of virgins.
44. All the iron contained in the human body is only enough to make one tiny watch gear.
45. There are more than 100 different types of viruses that cause the flu.
46. Kissing normalizes the level of acidity in the oral cavity. It is much more effective for cleaning the mouth than chewing gum.
47. You can lose 150 calories per hour if you bang your head against a wall.
48. Humans are the only living things that can draw straight lines.
49. Throughout life human skin is completely replaced about 1,000 times.
50. Someone who smokes a pack of cigarettes per day is equivalent to drinking half a cup of tar a year.
51. Men blink about twice as often as women.
52. The human body contains only four types of minerals: Apatite, Aragonite, Calcite and Crystallite.
53. Kissing passionately triggers the same chemical reaction in the brain as skydiving or shooting a gun.
54. Men are said to be stunted if their height is below 1.3 m, while for women 1.2 m.
55. Fingernails grow about four times faster than toenails.
56. Blue-eyed people are more sensitive to pain than other eye colors.
57. Nerve impulses in the human body travel at a speed of about 90 meters per second.
58. Every second there are at least 100,000 chemical reactions in the human brain.
59. Everyone has a dimple on their lower back. This dimple appears where the pelvis joins the sacrum.
60. If one identical twin does not have a particular tooth, the other twin will also not have it.
61. When stretched, the surface area of a human lung is roughly the same as that of a tennis court.
62. Blond-haired men's hair grows faster than black-haired men.
63. Leukocytes in the human body live for two to four days, and erythrocytes for three to four months.
64. The strongest muscle in the human body is the tongue.
65. The human heart is roughly the size of a fist, and an adult's heart weighs 220-260 grams.
66. At birth, there are 14 billion cells in the human brain. This number does not increase throughout a person's lifetime. After 25 years, the number of cells drops by 100,000 per day. After 40 years, brain decline increases markedly, and after 50 years the neurons (nerve cells) shrink and the brain becomes smaller.
67. At birth, your body is made up of about 300 bones, and as you grow up this number dwindles down to only 206 bones.
68. When alive, the human small intestine is about 2.5 meters long, and after death it increases to about 6 meters in length because the muscles in the intestinal wall relax.
69. The right lung can take in more air than the left lung.
70. Adults breathe about 23,000 per day.
71. The smallest cell in the male body is the sperm cell.
72. There are at least about 40,000 bacteria in the human mouth.
73. The human eye can distinguish 10 million different colors.
74. The chemical compound in the body that causes the feeling of ecstasy (phenylethylamine) is also contained in chocolate.
75. The human heart pumps blood with a pressure capable of raising the blood up to the fourth floor of a building.
76. Your body burns more calories while sleeping than when watching TV.
77. Children grow faster in spring.
78. Each year more than 2 million left-handed people die from human error when using equipment designed for right-handed people.
79. A person uses 17 muscles when smiling and 43 when frowning.
80. By age 60 most people have lost half of their taste buds.
81. Your hair will grow twice as fast during airplane flights.
82. There are at least two percent of humans with super vision. One percent can see infrared light, while another 1% can see ultraviolet radiation.
83. If you are locked in a completely sealed room, you will not die from lack of oxygen but from carbon dioxide poisoning.
84. Statistically, only one in two billion people reaches the age of 116.
85. On average, a person utters 4,800 words a day.
86. The retina of the eye has 137 million light-sensitive cells: 130 million for black and white vision and 7 million for color vision.
87. Our eyes remain the same size they were at birth, but our noses and ears never stop growing.
88. In the morning, a person is about 8 millimeters taller than at night.
89. The muscles that help your eyes focus make around 100,000 movements per day. To make your leg muscles do the same amount of movement, you have to walk 80 kilometers.
90. Coughing is the equivalent of a burst of air traveling at speeds of up to 60 miles per hour.
91. According to German researchers, the risk of having a heart attack is higher on Mondays than on other days of the week.
92. Bone is about 5 times stronger than steel.
93. It is impossible to sneeze with open eyes.
94. Humans die faster from lack of sleep than from hunger. Death would occur after only ten days without sleep, whereas starvation would take several weeks.
95. The average human life expectancy is 2,475,576,000 seconds. During that time we say about 123,205,750 words and have sex 4,239 times.