10 Amazing Facts about human body that’ll surprise you

Our world is filled with wonderful and fascinating things. Sometimes it surprises us with its wonderfulness. Of all the wonderful things in the universe, life is the most wonderful thing and yes we are also part of this essence of life, the most beautiful one.

Humans have been always curious about life and how it’s work. Though modern-day scientific development has helped us to understand many aspects of life, still there are many things about the human body that might be shocking to you. 

Here are some amazing facts about the human body that may surprise you.


Amazing Facts about human body


1. When we are hungry our mind starts eating itself

When we are hungry. The cells of our body start eating themselves in order to keep themselves alive. This process is known as autophagy. Even though the body is hungry, the brain needs to work, and to do so it needs nutrients. Which it gets by autophagy.

In this way, our body gives PRIORITY to the mind even in such a state of starvation. When the body does not get food, it uses the fat in it. Our body tries to keep itself alive by metabolizing its own muscles and connective tissue. 

In the same way, the brain also breaks its neurons and keeps itself alive. That’s why scientists have developed the theory that when the body is hungry for a long time, the brain starts eating itself. During this time, the size of the brain also gets smaller. 



However, after getting a healthy diet, the brain gets back in shape. According to a study, the brains of a man and the brain of a woman work differently in this situation. When the body is hungry, the man’s brain eats itself more quickly than the woman’s brain.


2. Amazing miracles of newborn

Newborn babies can swallow and breathe simultaneously. It is known as suck-swallow-breathe. At birth, the epiglottis and soft palate of children come into contact with each other while closing their mouth and breathing. 

Epiglottis is the part present in the throat that prevents food from going into the windpipe and lungs. At the time of breastfeeding, the larynx (our voice box) elevates and interlocks the epiglottis with a soft palate. 


This allows the newborn to breathe and swallow at the same time. Older people cannot do anything like that.


3. Our height increased in the morning

The average person is up to 1cm tall in the morning compared to the entire day. But why does this happen? The whole idea of ​​this goes to the science of our body, which works differently in the morning and evening, and our spinal cord plays important role in this. 

The spine is made up of 33 vertebrae and with the help of these vertebrae, we sit, walk or stand. There is a gap between these vertebrae. When we wake up in the morning after sleeping at night, our body is in a state of complete rest, which increases our height by 1cm. 


In contrast, in the afternoon and evening, our body is in constant motion. Along with our weight, due to frequent activities, the vertebrae gap shrinks, reducing our height by evening. 


4. Fingerprints



Amazing Facts about human body

For nearly a century fingerprints have been the gold standard for forensic science. The fingerprints of our hands get this sign long before we are born. 

Everyone’s prints are unique even if they are identical twins. We got these everlasting fingerprints inside the mother’s womb at the age of 6 months.

5. Hair Growth


Hair is the second-fastest-growing tissue in the body after bone marrow. Human hair grows at a speed of 1/2 inch every month. More surprising is that it grows rapidly during the summer season or in our sleep. 

A single hair has a lifespan of about five years. A strand of hair is stronger than a copper wire with the same diameter. If the hair is allowed to grow for its entire lifespan, the human hair will have a length of about 725 kilometres.

Hair is made up of mostly keratin, the same substance that makes up most of horses hooves, mane, and tail. Also, it is said that human hair can grow a few centimetres after death.

6. Our stomach acid can dissolve razor-sharp blade

Inside our stomach, a highly acidic environment is present, which is composed of gastric juice, also known as called gastric acid. Hydrochloric acid, Potassium Chloride, and Sodium Chloride are found in gastric acid. The pH of our stomach is in the range of 1.0 to 2.0. The lower the pH, the more acid there is. 

With such a low pH level, the acid present in the stomach is as strong as the battery acid, which can cause a razor blade to dissolve. Every three-four days our stomach wall is renewed. Due to which there is no harm to the stomach or body. Otherwise, gastric acid would swallow our stomach. It may sound interesting to hear, but never try to try it.

7. The wonder of the pinkie finger

Have you ever wonder what is the role of your pinkie finger. So let’s start with an example, use that pinkie finger to lift your wine glass and put a jam in the name of that finger, which is the most important part of your hand. Now you may think what is the role of your pinkie finger in it.

Well, even if you don’t think this little finger is of much use, this pinky finger is the power button of our hand. When the rest of the three fingers – index, thumb, and middles fingers are used to write and hold some stuff, with the help of this pinky finger, we get the strength for grip. 50 percent of the power of the hand is in this finger.

8. Babies Can’t See Color

Children are very cute but their eyes do not develop like ours. While we can recognize every colour in the world, young children can see only a few shades of black, white and grey. They cannot even see outside 10 inches. 

Colours are identified because of the rods and cones present in the eye. There are three cones of red, green and blue colour and there are rods which help to see in low light areas. 

Amazing Facts about human body


Only 1 month after being born, newborns know how to differentiate between two colours. After two months, they start seeing all the colours and by coming to five months, they learn to differentiate between them.

9. Story of saliva

A person makes about two litres of saliva every day. Accordingly, we make saliva from 288 to 576 litres every year. However, believing this is not so difficult. Especially when we know that our mouth gets water soon after seeing food.

Also, Saliva secretion helps wounds in the mouth heal faster than wounds elsewhere on the body. Saliva is filled with a protein called histatin that is known as an antibacterial agent.

It can also reveal your age. The DNA in our spittle changes over time. As we age, our DNA undergoes a process called methylation. This chemical process activates certain genes and shuts others off, based on environmental factors. By focusing on two genes most affected by the change, scientists can detect a person’s age to within five years.

10. How much breath do you have to pay to live?

It is difficult to count every breath being taken. But we can give you the figure of breaths being taken at an average level. 

Newborn children breathe for 30-60 times in 1 minute, while children who walk on their knees breathe 20-30 times. Older children and their older people breathe for 12-20 times daily, while 17,000-30,000 total breaths are filled daily.


Thanks for reading! 10 Amazing Facts about the human body that’ll surprise you. 

If you know any amazing facts related to the human body that can’t mention in the article. Please tell us in the comment box.

Rajat Red

Admin and Founder of "UNTOLD SCIENCE | Exploring The World Of Science & Nature". He is a science student pursuing B.Sc in Biology from India. He is a curious being and an explorer, who has an interest in many fields besides science. But, He loves to study and write about science.

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