The human body is a complex array of organ systems that function in perfect synchronization. For centuries, scientists have been studying various parts of the human body so that they can get a better idea of how it works. Some of the things that they have found are so fascinating, that it’s difficult to believe them at first. However, with the latest advances in medicine and research, we have been able to get a clear picture of the way that the human body works and it is just awesome. We have collected a bunch of fascinating facts about the human body that will surely blow your mind.
No Blood Supply Here
The cornea of the eyes is the only part of the human body that does not receive any blood supply. The cornea receives the oxygen that they need directly from the air.
Human Brain Memory
The human brain has a huge memory capacity. If it was to be converted into digital units that we know commonly, then it would be more than four terabytes on a hard drive.
Newborn Children Are Special
A newborn child can breathe and swallow at the same time for up to seven months. Try doing that and you will surely choke on your food.
Skull And Bones
Did you know that the skull is made up of different kinds of bones? Yes, the skull is not just one bone but is made up of 29 different bones.
The Speed Of Impulse
The nerve impulses that originate from your brain travel at a speed of 274 km/h. That is faster than most cars on Earth.
Human Brain Works Hard
The human brain is always working, sending and receiving impulses from all over the body. In a single day, a single human brain generates more electrical impulses than all the telephones of the world combined.
The Chemicals In The Body
An average human body contains enough sulfur to kill all the fleas on a dog, enough carbon to make 900 pencils, enough potassium to fire a toy cannon, enough fat to make 7 bars of soap and enough water to fill a 50-liter barrel. Amazing!
The Hard-Working Heart
An average human heart pumps 182 million litres of blood in an entire lifetime.
Cell Regeneration In The Body
50,000 cells are destroyed and regenerated by the human body in the time it takes for you to read this sentence. The power of regeneration of the body is immensely strong.
The Human Fingerprints
The human embryo begins to form the fingerprints just within three months of its conception. These fingerprints deepen over the lifetime but do not change.
Women’s And Men’s Hearts
There is a slight difference between the hearts of women and men. It has been found that a woman’s heart beats faster than that of a man.
The Longest Hiccup
Charles Osborne was born in 1894 and his hiccups started in 1922 and lasted for a period of 68 years.
Right-Handed People Live Longer
A study has shown that right-handed people live, on average, 9 years longer than left-handed people.
Average Tilt During Kissing
A study has shown that about two-thirds of people tilt their heads to the right while kissing another human being.
Forgetting The Dreams
An average person forgets 90% of their dreams within a single day of waking up from their sleep.
Length Of Blood Vessels
The total length of the blood vessels in the human body is about 100,000 kilometers, which is more than 60,000 miles.
Person’s Respiration Rate
An average person’s respiration rate is one third higher in spring than in autumn.
Recalling Power Of Humans
When a person is on their deathbed, it is estimated that they can recall, on average, 150 trillion pieces of information from their lifetime.
Loss Of Body Heat
A study has confirmed that our body loses 80% of its heat from our head.
Blushing Turns You Red
When you blush, it is not just your face that turns red, but also your stomach.
The Feeling Of Thirst
A feeling of thirst occurs when water loss is equal to 1% of your body weight. The loss of more than 5% can cause fainting, and more than 10% causes death from dehydration.
The Active Enzymes In The Body
The human body has more than 700 enzymes that help the body function normally.
The Unique Sleeping Style
Human beings are the only living organisms that sleep on their backs. The rest of the animal world does not follow this sleeping style.
Kids Ask Questions
An average 4 year old child asks nearly 450 questions within a single day.
Unique Finger Prints
Humans are not the only ones who have unique fingerprints. The koala bears also have the same distinctive property.
Disease Causing Bacteria
Only 1% of the bacteria in the human body are capable of causing disease. The rest are present either to have no effect or to provide a benefit to the body.
Even though the Earth is so vast, we are struggling to control the growing population. However, if we were to put every human being in a cube of every side 1,000 kilometers, everyone would fit perfectly.
The Belly Button
The scientific name for the belly button is umbilicus.
The Body Organ That Cannot Heal
The teeth are the only body organ in the human body without any regenerative power. In other words, they cannot heal themselves.
An average human being requires only seven minutes to fall asleep. And yet, most of us remain wide awake at nights.
The people who are right handed chew most of the food with the right side of their mouths while the people who are left handed do so with the left side of their mouths.
Left Handed People
Taking into account the entire population of the Earth, about 7% of people are left handed.
The smell of apples and bananas can help a person to lose weight.
The Length Of Human Hair
If human hair was allowed to grow as long as it can and was never cut in a persons lifetime, the total length of hair could grow more than 725 kilometers.
Many people are able to move their ears but only a third of them are able to move just one ear.
An average human eats and swallows nearly 8 spiders in their lifetime. This is an estimated figure and does not mean that you have to eat 8 spiders in your lifetime.
The Weight Of Bacteria
If all the bacteria in the body were collected in one place, then their weight would be about 2 kilograms.
Calcium In The Body
99% of the calcium in the body is contained within the teeth.
The Sensitive Lips
The human lips are a hundred times more sensitive than the tips of a person’s fingers.
When a person kisses another, the heart rate of the two can shoot up to 100 beats per minute or more.
The Strength Of The Teeth
The total strength of masticatory muscles on one side of your jaw is equal to 195 kilograms.
Bacteria Transfer While Kissing
A person passes on 278 different types of bacteria to another person when they kiss them. Fortunately, 95% of them are not harmful.
Did you know that there are some people who live in fear of virgins? This phobia is known as Parthenophobia.
The Iron In The Human Body
If you collected all the iron contained in the human body, you would get just a small cog, big enough to use in your watch.
Viruses Causing Colds
Did you know that there are about a hundred viruses that can cause a cold in the human body.
Kissing Is Better Than Chewing Gum
If someone kisses another person for a certain amount of time, this is much more effective in terms of hygiene than using chewing gum, as it normalises the level of acidity in your oral cavities.
Burning Calories Every Hour
You can lose 150 calories per hour if you hit your head against the wall. The next time you want to lose some weight, try banging your head against the wall for an hour.
Drawing In Straight Lines
Human beings are the only species that can draw straight lines.
Replacing Human Skin
Human skin is completely replaced about 1,000 times during a person’s lifetime.
Smoking Cigarettes Is Harmful
A person who smokes a pack of cigarettes a day is doing the equivalent of drinking half a cup of tar a year.
Women blink about two times less often than men. The cold hard stare of women is even more terrifying.
The Minerals In The Body
The structure of the human body contains only four minerals: apatite, aragonite, calcite and cristobalite.
Chemical Reactions While Kissing
A passionate kiss causes the same chemical reactions in the brain that skydiving and firing a gun do.
Dwarfism In Human Beings
Men are officially classified as dwarves if their height is below 1.3 m, whereas for women the measure is 1.2 m.
The Growth Of Nails
The fingernails grow four times faster than the toenails.
People With Blue Eyes
People with blue eyes are more sensitive to pain than others.
Chemical Reactions In The Brain
100,000 chemical reactions occur in the human brain every second.
The Dimples On The Lower Back
Everyone has dimples on their lower back, but on some people they are more pronounced than on others. They appear where the pelvis joins with the sacrum, so their appearance makes sense.
The Similarities Between Twins
If one identical twins lacks a certain tooth, the other twin will not have that tooth either.
The Area Covered By Lungs
The surface area of the human lungs is approximately equal to the area of a tennis court.
Time Spent Kissing
During a person’s lifetime, they spend about 2 weeks kissing. And yet, many of us go through life without a single kiss.
Blonde Vs Dark Haired Men
The facial hair of a blonde-haired man grows faster than that of a man with dark hair. Congratulations blonde men!
Life Span Of Leucocytes Vs Erythrocytes
Leukocytes (White Blood Cells) in the human body live for two to four days, while erythrocytes (Red Blood Cells) for three to four months.
The Strongest Muscle In The Body
One would believe that the strongest muscle in the human body must be from one of the limbs since they have to carry the weight of the body. However, the strongest muscle in the body is actually the tongue.
The Human Heart
The human heart is approximately equal in size to that of a person’s fist. An adult’s heart weighs 220-260 grams.
The Number Of Cells In The Body
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 fall by 100,000 every day. About 70 cells die in the minute it takes you to read a page in a book. After 40 years, the decline of the brain accelerates sharply, and after 50 years neurons (that is, nerve cells) shrink and the brain gets smaller.
The Bones In The Body
At birth, a child’s body is made up of around 300 bones. But adult has just 206. If you are wondering where the rest of the bones disappeared, they actually fuse together to form the shape of the bones as we know in adults.
The Length Of The Small Intestine
During a person’s lifetime, the small intestine is about 2.5 meters. After they die, the muscles in the walls of their intestine relax, and it’s length increases to 6 meters.
The Capacity Of The Lungs
Did you know that the human lungs have different capacities? Your right lung can take in more air than your left.
Breathing Through Your Lifetime
An adult person performs around 23,000 inhalations and exhalations a day. This is an average number and the actual number depends on your age.
The Smallest Cells In The Body
The smallest cells in a man’s body are sperm cells. This would be quite an embarrassing thing for a man to admit but it is a fact.
Bacteria In The Mouth
There are around 40,000 bacteria in the human mouth. Remember that the next time you stand too close to someone’s open mouth.
Taste Buds In The Tongue
Each of us has around 2,000 taste buds. And yet, there are many people who are unable to taste their badly cooked food.
Colors Seen By The Eye
The human eye can distinguish 10 million different colours. What about the people who are color blind? How many do they see?
Chocolate Brings Joy
The chemical compound in the body which causes feelings of ecstasy (phenylethylamine) is also contained in chocolate.
The Blood Pressure
The human heart pumps blood at such pressure that it would be able to raise blood up to the fourth floor of a building. Imagine how strong your veins have to be in order to control the flow of blood.
Better To Sleep
A person burns more calories when they are asleep than when they watch TV. The next time you want to lose some calories, just go to sleep.
Growth Of Children
Children grow faster in the spring. This was found as a result of a study, so parents should be on the lookout to get their children new clothes when the weather starts to get warmer.
Right-Handed People Rule
Every year more than 2 million left-handed people die because of mistakes they make when using machines designed for right-handed people. This is because most of the machines are made for right-handed people because they are in the majority.
It turns out that one man in every three hundred is capable of satisfying themselves orally. Now do not go around trying to be one of those men and bend your back in a wrong way.
Smile More Than You Frown
A person uses 17 muscles when they smile, and 43 when they frown. So, always keep smiling and give your muscles some relaxation.
Losing The Taste Buds
By the age of 60 most people lose half of their taste buds. Is that why old people love to eat bland food?
Flying Helps Hair Growth
The rate at which a person’s hair grows doubles during an airplane flight. So, if you want longer hair, try flying more often.
Seeing Beyond The Spectrum
One percent of people can see infrared light and one percent can see ultraviolet radiation. That is about 72 million people who can see infrared rays and 72 million people who can see ultraviolet rays as well.
Dying In A Closed Room
If you were locked in a completely sealed room, you would not die due to a lack of air, but from carbon dioxide poisoning. Lack of oxygen can be very frustrating for the body.
Long Living People
Statistically, only one person out of two billion reaches the age of 116 years old. That is quite a long time to live a satisfied life.
On average, a person says 4,800 words in 24 hours. That is quite a lot of words to speak. Maybe people should try to speak less and bring down that average.
The Sensitivity Of The Retinas
The retinas inside the eye cover about 650 square mm and contain 137 million light-sensitive cells: 130 million are for black and white vision and 7 million are for helping you see in colour.
The Size Of The Eyes
Our eyes remain the same size as they were at birth, but our nose and ears never stop growing. If you had large eyes when you were born, you will have quite an easy life since people will find you quite charming with your puppy eyes.
Taller In The Morning
In the morning, a person is about 8 millimetres taller than in the evening. Always measure your height in the morning when your vertebrae are more relaxed.
The Muscles Of The Eyes
The muscles which help your eyes to focus complete around 100,000 movements a day. In order to make your leg muscles do the same amount of movements, you would need to walk 80 kilometres.
The Speed Of Cough
A cough amounts to an explosive charge of air which moves at speeds of up to 60 miles per hour. Always cough in your sleeve to stop the spread of germs.
Heart Attacks And Mondays
According to German researchers, the risk of having a heart attack is higher on Monday than on any other day of the week.
The Strong Bones
Bones are about 5 times stronger than steel. Huh, maybe bones should be used to make buildings as well. Just an idea!
Sneezing And Eyes
It is impossible to sneeze with your eyes open. If you try, you run the risk of popping a blood vessel in your eyes.
Ingrown toenails are hereditary. It is not your fault, the fault lies in your genes.
Sleep More Than You Eat
A person would die quicker from a total lack of sleep than from hunger. Death would occur after ten days without sleep, whereas from hunger it would take several weeks.
The average life expectancy is 2,475,576,000 seconds. During this time we pronounce, on average, around 123,205,750 words and have sex 4,239 times.