The whole body of a person even before his birth is covered with small hairs that grow and are constantly replaced. They are able to warm the body in cold weather, and in the heat, on the contrary, cool, absorbing excess moisture. Thus, the hairline plays an important role in human life. Next, we will try to figure out why a person needs hair and what are their functions.
The composition and details of the structure of hair
Hair - processes on the human body in the form of threads. They consist of many elements, the main of which is keratin. In addition to it, the hair has a lot of water, lipids and organic substances.
If you examine the hair under a microscope, it can be divided into several parts:
- the visible part in the form of a rod;
- root.
There is an opinion that the only living area of the hair is the root, and overgrown - dead matter. In fact, this is so, because hair grows precisely from the root.
Hair consists of several layers: internal, cortical and external. Under a microscope, it looks like a pine cone, which is densely strewn with scales. From a biological point of view, these flakes are called cuticles. She is responsible for the beautiful appearance of the hair: for their smoothness, softness, silkiness.
Human Hair Function
The answer to the question of why a person needs hair cannot be unambiguous. For example, the hairline on a person’s head, as many people think, performs an aesthetic function. In fact, aesthetics in this case is a secondary issue. In the first place is the protection of the brain from low and high air temperatures in cold and hot. Also, the scalp on the head protects the skull from minor mechanical injuries.
In some religions, their interpretation of why hair is necessary for a person. It is commonly believed that hair stores energy. Therefore, they can not be cut and thrown away. They are also a kind of carrier of the history of a particular person. Nowadays, almost no one believes in this. But everyone knows that beautiful, thick and shiny hair on the head is a sign of good physical health.
Body hair
Why would a person understand the hair on his head. But these small processes are located throughout the body. According to scientists, vegetation on the human body has several reasons. The first of them is climate. Our ancestors had a thick hair coat. Over time, he became less and less expressive. Some scientists argue that the hot climate was to blame. It was because of him that “molting” occurred.
Others argue that the light hairline on the human body can be explained by the fact that our ancestors often warmed themselves around the fire and used it for cooking, constantly searing hair on the body. Over time, it began to grow less intensively.
Also, an important function of the cover of small hairs is to protect the body from parasites and insects. They help to keep the pest on the surface of the body before it starts an “attack”.
Theory of Hair Replacement
There is a theory that the hairline is partially replaced by fat. As you know, primitive people led an active lifestyle. Swimming, hunting was much easier, without having thick hair on the body. Therefore, part of the wool went through several stages of replacement with a fat layer. Which performed and is performing extremely important functions in human life, including the function of heat preservation. Why would a man need hair, our ancestors did not think. However, as it became clear, they were concerned about the comfort of life without such dense vegetation on the body.
Facial hair function
In the 21st century, everyone is trying in any way to get rid of excess vegetation on the body, this also applies to facial hair. Men shave their beards, mustaches. Women pluck eyebrows. However, no one thinks about the fact that facial hair is designed to perform important functions for each of us. Why does a person need facial hair? Eyebrow and eyelash hair perform the function of protecting the eyes from debris, dust, wind, snow. Thanks to the cilia, harmful microorganisms and bacteria do not get into the eyes.
Why does a man need hair in his groin
Nature took care of the intimate places of a person: the groin, the armpit area also has hair. It has been scientifically proven that hair in the groin has long been needed in order to attract a partner by smell. As you know, odorous glands are concentrated in the intimate zone, the smell of which lingers on the hairs. With the help of hair in an intimate area, nature designated the human genitals.
The vegetation in these places protects the lymph nodes from overheating, which is very important.
You can get the same answer to the question of why a person needs hair under his armpits.
Unusual Hair Facts
We all take hair for granted, without even thinking about why we need it. In fact, they are considered one of the most mysterious phenomena of the human body, which is daily studied by hundreds of scientists around the world. So, some facts that an ordinary person is unlikely to know about:
- The strongest hair in a person grows at the age of 15-17 years. Then they are replaced by thinner and weaker ones.
- Scientists have calculated that if you collect the entire hairline of a person’s body into one hair, then it would grow by 115 mm every minute. And for the day, almost 155 meters.
- Every day, human hair on the head grows by 0.3 mm.
- Each hair bulb gives about 15-20 hairs for a person’s life.
- The most intense hair growth occurs in the morning and evening.
- Every day, an adult loses more than 200 hair.
- The hair follicle in women is several millimeters deeper than in men. For this reason, they are less prone to baldness.
- There is no hair only on the heels, palms and feet. All other parts of the body are covered with hair.
Some Hair Care Tips
Today, a woman’s grooming is evaluated according to several criteria: beautiful hands, a radiant smile, and, of course, healthy and strong hair. So that they are just that, you need to follow the following rules:
- Use a hair mask or conditioner every time after washing your hair. This will help for a while to give the hair shine and softness.
- After washing, rinse your hair with warm water, and preferably cold. A hot shower damages the structure of the hair.
- Proper nutrition is the key to health not only from within. Hair, skin, nails also need vitamins and minerals. Therefore, you need to maximize your diet with products that contain them.
- After a shower it is impossible to comb hair. You need to wait until they dry out a little, then disassemble them into strands with your fingers or a rare comb. Next, you need to dry your hair with a hairdryer and only after that comb your favorite brush. This will help to keep the beauty and shine of your hair as long as possible. For maximum smoothness of hair you need to use irons, curling irons and other hair styling products as little as possible.