Then exhale, relax the abdomen when exhaling, return to the state before inhaling, and pay attention to releasing all the air just inhaled. This completes a cycle and then inhales. ...
It is best to take a deep breath in the fresh air.
However, it is worth reminding that it is best not to take a deep breath when it is foggy in autumn and winter. According to the determination, the droplets contain many harmful substances such as acid, alkali, salt, amine, phenol, dust, pathogenic microorganisms and so on. And the proportion is usually several times higher than that of atmospheric water droplets, which is harmful to human health. When fogging, the air pressure is low, and the combination of pollutants and water vapor in the air will be difficult to spread and settle, and harmful substances will easily stay in a certain place, resulting in a high concentration in a certain area, and the particles that constitute the fog core will be easily inhaled by people. These substances can cause laryngitis, tracheitis, conjunctivitis and some allergic diseases after stimulating some sensitive parts of the human body, which is called "epidemic qi" in Chinese medicine and may be life-threatening to the elderly and the infirm.