So, you see, nothing special: 2 arms, 2 legs
What can surprise an ordinary, ordinary, so to speak, human body? Who wants to sleep so much in the mornings, and on Friday nights - traditionally splashed and inclined to sing terrible songs in a terrible voice?.. Oddly enough, not so small. Here are exactly 20 facts that represent human abilities in a new way that not so many of us know about:
1. We shed too
It's not just pets that face the problem of molting. Humans shed about 600,000 skin particles every hour. This equates to more than 600 g per year, so the average person sheds about 47 kg of skin in a lifetime.
2. Tongue imprint
Don't stick your tongue out if you don't want to be recognized. As with fingerprints, each has its own unique tongueprint.
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3. How many bones?
An adult has fewer bones than a baby. We are born with 350 bones, but since bones grow together as we grow, when we become adults, we only have 206 bones.
4. New stomach
Did you know that the stomach lining changes every 3-4 days? In fact, the strong stomach acid, which is needed to digest food, also absorbs its mucous membrane. Stomach acid is so strong it can dissolve a razor blade.
5. Memorizing smells
A human nose may not be as sensitive as a dog's, but we can remember 50,000 different smells.
6. Long intestine
The length of the small intestine is four times the height of a tall person. If the intestines did not twist and bend inside us, then its length (from 5 to 7 meters) would not fit into our abdominal cavity.
7. Bacteria
This fact can give you goosebumps, but it will be curious to know that there are about 32 million bacteria on every 2.5 square centimeter of your skin. Fortunately, most of them are harmless.
8. Body odor
Sweat is the source of foot and underarm odor. In fact, there are about 500,000 sweat glands on a pair of legs, which produce just under half a liter of sweat per day.
9. Sneezing speed
The air from a sneeze can travel at speeds of 160 km / h or more, which is a good reason to cover your nose and mouth when you sneeze.
10. The distance that blood makes
Blood has a long way to go. If you put all the blood vessels together, you get more than 96,560 km. A hardworking heart pumps about 7,570 liters of blood through these vessels every day.
11. The amount of saliva
You may not want to swim in your saliva, but if all the saliva persisted, then you could definitely do it. Over the course of a lifetime, the average person produces about 23,658 liters of saliva - enough to fill two pools.
12. The volume of snoring
By the age of 60, 60 percent of men and 40 percent of women will snore.
Although we snore an average of 60 decibels, which is the noise level of normal speech, snoring can reach intensities in excess of 80 decibels (which is the equivalent of a jackhammer sounding concrete).
Noise levels above 85 decibels are considered hazardous to the human ear.
13. Hair color and quantity
Blondes and blondes have more hair. Hair color determines the density of hair growth on the head, and it is higher in people with blond hair.
On average, a person has about 100,000 hair follicles on the head, each of which can produce about 20 hairs in a lifetime.
People with blond hair have 146,000 follicles, while people with dark hair have about 110,000 follicles. Brown-haired people have 100,000 follicles, while redheads have the rarest hair - 86,000 follicles.
14. Nail growth
If you have to trim your fingernails more often than your toenails, then this is quite natural.
Nails that are more exposed and we use more often grow faster.
The fastest growing nails are on the hand, which we write with and on the longest nail. Nails grow by an average of 3 mm every month.
15. Head weight
No wonder babies find it so difficult to hold their heads. The human head at birth is one quarter of its entire length and only one eighth of its entire length when we become adults.
16. Need for sleep
If you say: "I am dying, how I want to sleep," then such a phrase may mean exactly that. You can go for a week without food, and only 11 days without sleep. After 11 days, you will most likely fall asleep forever.
17 the largest and smallest cell in the body
The ovum is the largest cell in the human body. The sperm cell is the smallest cell.
18. Blinking frequency
The muscle that allows your eye to blink is the fastest muscle in the body. This allows you to blink 5 times per second. On average, we blink 15,000 times a day. Women blink twice as often as men.
19. Left-handed and right-handed
About 13 percent of people are left-handed. Right-handers live on average 9 years longer than left-handers.
20. Palette of taste
We have four main flavors, plus umami - the fifth flavor. The taste buds of salty and sweet foods are found on the tip of the tongue, bitter at the base and sour on the sides. Umami is a mixture of flavors that is felt in the center of the tongue. Not all taste buds are located on the tongue. About 10 percent of the receptors are located on the palate and cheeks.