Biting nails, belching ... is healthy

From an early age, we have been taught to eliminate bad habits, such as spitting, belching, . So you may be surprised to learn that some of the habits are considered This "bad" is healthy , according to scientific studies.

Bite nails

This is a habit that people have to struggle to get rid of, but it can be really good for you, according to Dr. Hilary Longhurst, an immune consultant at the Bart's NHS Trust Fund.

"Unless your hands are dirty, the germs we touch when biting your nails can boost our immune system , " Longhurst said.

This is because, our immune system has memories, remembering how to fight a certain bacterium it has encountered. When exposed to the bacteria for the second time, the immune system rummages through the memory and launches a weapon called memory lymphocytes that are likely to defeat the intruder.

Dr. Longhurst said that nail biting hobby may be a mark of evolution."In ancient times, people did not have scissors, so nail biting was the best way to keep their nails short, preventing them from injuring their clients."

Belching

Scientists found that loud, burping sounds, although uncomfortable to others, can actually help protect you from damage caused by stomach acid. The sound comes from a gas stasis when it passes through the valve in the esophagus below the throat. The valve - the upper esophageal sphincter - then vibrates, according to Dr. Nick Read, gastroenterologist for IBS Network.

Burp gas is formed from a mixture of substances, including the air we swallow when consuming food and carbon dioxide. It is produced in the stomach when acid is mixed with alkaline bile.

Some high-fat foods, such as chips or cream, wine and tobacco sauces may overcharge this process, leading to gastro-intestinal reflux. The release of natural gas like above - belching - is a normal part of the digestive process and prevents it from causing problems.

"If you don't burp and the gas is still in the stomach, it can cause the valve to prevent the esophagus and stomach from stretching, allowing stomach acid to splash into the esophagus, causing heartburn , " said Read. explain. It can also cause the lower part of the esophagus to contract, causing pain in the middle of the chest.

Although belching is normal in the digestive process, there are certain conditions that can make a person burp a lot, such as stomach ulcers or duodenal or esophagitis (the phenomenon is can be derived from taking aspirin or alcohol).

Convenient

Along with belching, it is important that we "flush" the air. Most of the gas discharged from the body through a process of neutrality is the result of fermentation of protein and carbohydrate carbohydrates. This process usually takes about 6 hours after eating.

"If you eat at 7pm, about 2 o'clock the next morning you will feel boiled in your lower abdomen and you can start to discharge. You can even feel your gut, especially the gut (the first part of the large intestine) begins to expand to the bottom, to the right of your abdomen, " Dr Read said.

Releasing air helps relieve pain and bloating, especially if you have a sensitive intestinal system, which is often swollen.

Cracking knuckles

Most people will frown when they hear someone break their knuckles even though the noise does not affect the health of their knuckles.

According to Dr. Chris Edwards, a rheumatologist at Southampton Hospital in the United Kingdom, people often hear from each other about the experience of people that breaking their knuckles is not beneficial and weakens their joints. However, scientific research has denied it. The noise emanating from this gesture is thought to originate from the air pockets formed in the synovial fluid surrounding each exploded joint due to the pressure of the joint.

Joint breaking can make joints feel more flexible and more comfortable. This may be because it helps to stretch the joints and help the joint have a greater angle of movement.

To spit

Indiscriminate spitting can be bad, but when you exercise, it can help you breathe more easily.

Dr. John Dickinson, a professor of movement physiology at Kent University, explains: "Usually, we breathe through the nose. This activity warms the air and makes the air more moist, allowing muscles However, when exercising sports, we tend to breathe deeper through our mouths to suck in as much air as we can, however, the air gets into the style. "This is not warm and moist. And when cold and dry air hits the back of the throat, the cells will try to protect themselves by creating stimulation."

Although not harmful, this stimulation can cause the cells that shield the throat to produce a layer of saliva that protects them from cold air. According to Dr. Dickinson, people running can see saliva accumulate and hinder their breathing so they want to spit it out.