The only part of the body that does not have blood supply is the cornea of ​​the eye. It receives oxygen directly from the air.
The capacity of the human brain exceeds 4 terabytes.
Up to 7 months, the baby can breathe and swallow at the same time.
Our skull consists of 29 different bones.
A nerve impulse from the brain moves at a speed of 274 km / h.
One human brain generates more electrical impulses in one day than all the telephones in the world combined.
The average human body contains enough sulfur to kill all the fleas on the average dog; carbon - to make 900 pencils; potassium - to shoot from a toy gun; fat - to make 7 bars of soap; and enough water to fill a barrel of 50 liters.
A person’s heart pumps 182 million liters of blood in his life.
50 thousand cells in your body die and are replaced with new ones while you read this sentence.
The fetus acquires fingerprints from the age of 3 months.
Women's hearts beat faster than men's.
A man named Charles Osborne hiccuped for 68 years.
Right-handed people live on average 9 years longer than left-handed people.
About 2/3 of people bow their heads to the right when they kiss.
A person forgets 90% of his dreams.
The total length of blood vessels in the human body is approximately 100 thousand km.
In spring, the respiratory rate is on average 1/3 higher than in autumn.
Towards the end of life, a person remembers an average of 150 trillion bits of information.
80% of the heat of the human body leaves the head.
When you blush, your stomach turns red too.
A feeling of thirst appears with a loss of water equal to 1% of body weight. Losing more than 5% can lead to fainting, and more than 10% - to death from dehydration.
At least 700 enzymes work in the human body.
Humans are the only creatures that sleep on their backs.
An average 4-year-old child asks 450 questions a day.
Unique fingerprints besides people also have koalas.
Only 1% of bacteria cause ailments in humans.
All people on the planet can be comfortably laid in a cube with a side of 1,000 meters.
The scientific name for the navel is umbilicus.
A tooth is the only part of the human body that is not capable of self-healing.
On average, a person needs 7 minutes to fall asleep.
The right-hander chews most of the food on the right side of the jaw, the left-hander - on the left.
Only 7% of left-handed people in the world.
The aroma of apples and bananas helps to lose weight.
The length of hair on the head grown by a person on average during life is 725 km.
Among people who can move their ears, only 1/3 can move with one ear.
The average person in his entire life swallows 8 small spiders.
The total weight of bacteria living in the human body is 2 kg.
99% of all calcium in the body is in the teeth.
Human lips are hundreds of times more sensitive than fingertips. A true kiss increases the pulse to a frequency of 100 or more beats per minute.
The absolute strength of the masticatory muscles on one side is 195 kg.
During the kiss, 278 different bacterial cultures are transmitted from one person to another. Fortunately, 95% of them are not dangerous.
Parthenophobia is a fear of virgins.
Tooth enamel is the hardest tissue produced by the human body.
If you collect all the iron contained in the human body, you get only a small screw for the watch.
There are over 100 different viruses that cause a runny nose.
A kiss of sufficient duration is much better than chewing gum, normalizes acidity in the oral cavity.
Hitting your head against a wall, you can lose 150 kcal per hour.
Man is the only representative of the animal world that can draw straight lines.
During the lifetime, human skin changes about 1,000 times.
Each person has dimples on the lower back, only for someone they are pronounced, while in others they are less noticeable. The dimples are located where the pelvis fuses with the sacrum, so that their appearance is completely justified.Women blink about 2 times more often than men.
The human body contains only 4 minerals: apatite, aragonite, calcite and cristobalite.
A true passionate kiss causes the same chemical reactions in the brain as parachuting and pistol shooting.
Men are considered dwarfs with growth below 130 cm, women - below 120 cm.
The nails on the fingers grow about 4 times faster than on the toes.
People with blue eyes are more sensitive to pain than everyone else.
Nerve impulses in the human body travel at a speed of approximately 90 meters per second.
In the brain of a person, 100 thousand chemical reactions occur in 1 second.
Children are born without kneecaps. They appear only at the age of 2-6 years.
If one of the identical twins lacks one or another tooth, as a rule, the same tooth is also missing from the other twin.
The surface area of ​​human lungs is approximately equal to the area of ​​a tennis court.
On average, a person spends 2 weeks kissing for his whole life.
For blondes, the beard grows faster than for brunettes.
White blood cells in the human body live 2–4 days, and red blood cells - 3-4 months.
The strongest muscle in the human body is the tongue.
The size of a person’s heart is approximately equal to the size of his fist. The weight of the heart of an adult is 220-260 grams.
Since birth, 14 billion cells already exist in the human brain, and this number does not increase until death. On the contrary, after 25 years it is reduced by 100 thousand per day. About 70 cells die in the minute you spend reading a page. After 40 years, brain degradation accelerates sharply, and after 50, neurons (nerve cells) dry out and brain volume shrinks.
At birth, there are about 300 bones in the baby’s body; in adulthood, there are only 206.
The human small intestine during life has a length of about 2.5 meters. After his death, when the muscles of the intestinal wall relax, the length reaches 6 meters.
The right lung of a person contains more air than the left.
An adult makes about 23 thousand breaths (and exhalations) per day.
The smallest cells in a man’s body are sperm cells.
About 40 thousand bacteria are in the human mouth.
There are about 2,000 taste buds in the human body.
The human eye is capable of distinguishing 10 million color shades.
The chemical compound responsible for ecstasy of love (phenylethylamine) is present in chocolate.
The human heart creates pressure, which is enough to raise blood to the level of the 4th floor.
In a dream, a person burns more calories than when watching TV.
Children grow fastest in spring.
More than 2,000 left-handed people die each year due to errors in the operation of mechanisms designed for right-handed people.
It turns out that every 300th man has the opportunity to satisfy himself orally.
A person uses 17 muscles when smiling, and 43 when he frowns.
At the age of 60, most people lose half of their taste buds.
During a flight in an airplane, the person’s hair growth rate doubles.
1% of people can see infrared radiation, and 1% - ultraviolet.
If you are locked in a completely enclosed room, then you will die from carbon dioxide poisoning, and not due to a lack of air.
According to statistics, only 1 person in 2 billion steps over the threshold of 116 years.
On average, a person speaks 4,800 words in 24 hours.
The retina inside the eye covers about 650 square meters. mm and contains 137 million photosensitive cells: 130 million rods for black-and-white vision and 7 million cones for color vision.
Our eyes are always the same size from birth, but our nose and ears never stop growing.
In the morning, a person is approximately 8 mm higher than in the evening.
The eye focusing muscles move 100 thousand times a day. For the leg muscles to make as many contractions, you need to walk 80 km per day.
Cough - an explosive charge of air that moves at a speed of up to 100 km / h.
According to German researchers, the risk of a heart attack is higher on Monday than on any other day of the week.
The bone is 5 times stronger than steel.
It is impossible to sneeze with open eyes.
Ingrown nails are a hereditary trait.
A normal person will die from a complete lack of sleep faster than from hunger. Death will occur in about 10 days without sleep, while from starvation in a few weeks.
The average life expectancy is 2 475 576 000 seconds, during life we ​​pronounce on average 123 205 750 words, have sex 4 239 times.
To get dimples on the cheeks, it is not necessary to resort to surgery. There are special exercises for this.