Relationship between chest tightness and air pressure in rainy days

The rainy weather is low and the air pressure is high on sunny days; The gas exchange in human lungs, that is, the process of gas exchange between human body and external environment, is called breathing. Through breathing, the body inhales O2 needed for metabolism from the atmosphere and discharges CO2 produced, which needs the help of air pressure. The external air pressure is low, which is not conducive to O2 inhalation and feels sultry. When the weather is clear, the internal air pressure and the external air pressure of the human body are in balance. When it rains, the air pressure becomes smaller relative to the air pressure inside the human body and forms a pressure difference with the air pressure outside the human body. The pressure difference generates pressure inside the human body and is accepted by the nerves.