Why do you say that you should try to avoid breathing through your mouth?

Because breathing through the mouth will increase the risk of inhaling germs. The respiratory system consists of two parts: the respiratory system and the lungs. The respiratory tract is a passage for gas to enter and leave the lungs, which consists of nose, pharynx, larynx, trachea, bronchus and branches. The nose is the entrance to the respiratory tract and the first barrier for external gases to enter the human body. The nasal cavity can warm and moisten the inhaled air. In addition, mucus and nose hair on the nose will stick, preventing the inhalation of dust and bacteria in the air. The nasal mucosa has olfactory cells unique to the nose. When it smells irritating or harmful gases, it can trigger the olfactory function and make a judgment immediately. Report? To the brain. Under the control of the brain, people can quickly cover their noses and reduce the harm of harmful substances. The mouth is an important organ of the digestive tract and has no function of the nose at all. Breathing in the presence of harmful gases is indistinguishable from each other. Breathing in the mouth is harmful to health because harmful substances will? Direct access? .

People's normal breathing consists of the nose, the lips are naturally closed, and they will not separate when breathing. However, if there is something wrong with the nose, people will open their mouths to inhale, but it will narrow their faces, make their front teeth protrude forward and lower their lips to the back. Diseases that cause oral breathing include turbinate hypertrophy, chronic nasal mucositis and tonsil hypertrophy. In this case, it is necessary to check the nasal cavity first to see if there is any nasal disease. If found, it should be treated in time. The standard of treatment is that it is not difficult to breathe through the nose when the child is emotional or strenuous. If the child's upper lip is short and difficult to close, it is necessary to strengthen lip muscle training according to the guidance of the dentist. At night, the upper and lower lips can be sealed with tape.

The most scientific way to breathe is to stop inhaling (hold your breath 10-20 seconds) and then exhale, which will increase the excitability of parasympathetic nerves, increase the number of bowel sounds, facilitate digestion and absorption, and prolong life. Another breathing method is based on deep and long abdominal breathing, which gradually moves the muscle groups such as lungs, ribs and diaphragm to the maximum, thus filling the lungs with air. Although I began to practice deliberately at first, the ultimate goal was to integrate into life, and all postures and movements were combined with breathing.

This can better understand the strength and rhythm of the body and improve efficiency. For example, climbing a mountain by breathing will not cause any pain symptoms (such as headache). You can practice this breathing method on the bus, on foot, at work or in the trees in the park. Especially in the case of sudden negative emotions, breathing can adjust body and mind in time and stabilize emotions. You can consciously breathe fresh air. The specific breathing method is to inhale slowly, inhale the nostrils, raise the ribs at the same time, slowly expand the abdomen, and then continue to inhale to fill the whole lung with air. At this time, when the ribs rise and the chest rises, it will expand. This process usually takes 5- 10 seconds, hold your breath for 5- 10 seconds, pause for 2-3 seconds, and start a new breath. Long-term physical exercise can improve breathing. For example, swimming can make people's vital capacity as high as 5000-7000 ml. It is much larger than the average person's 3000-4000 ml.