What exactly is "fog"?
From a meteorological perspective, fog is the condensation of tiny water droplets in the air. If the air is very clean and contains nothing, it is difficult for fog to form because there are no "condensation nuclei" (or "seeds"). Generally, the air always contains various impurities and particles. When these particles encounter water molecules in the air, they act as "condensation nuclei," causing the two to condense and form tiny water droplets and small ice crystals. A large gathering of these tiny water droplets forms fog. In fact, fog is the same as clouds; clouds are in the sky, and when they reach the ground, they become fog. In terms of the water droplets themselves, they are not harmful to the human body. However, when water droplets condense onto various small particles, the situation is different. What are these "small particles"? Observational research has found that these small particle impurities are nothing more than unburned coal dust from chimneys; complex tangible and intangible substances from automobile exhaust, such as nitrogen dioxide, carbon monoxide, and hydrocarbons; various harmful components discharged from chemical plants; and harmful substances kicked up from the ground, such as dust, dust mites, and pathogenic microorganisms.
Is it suitable to exercise in the morning on a foggy day?
Many people have the habit of morning exercise and persist in it all year round, regardless of wind or rain. Experts emphasize that it is not suitable to go out for morning exercise on a foggy day. When people exercise in the morning, their body's oxygen demand increases. The harmful substances in the fog can invade the respiratory tract, causing insufficient oxygen supply, which in turn leads to adverse symptoms such as difficulty breathing, chest tightness, and palpitations. Therefore, it is not recommended to exercise in the morning on a foggy day.
What diseases can foggy weather easily trigger?
Triggering respiratory diseases In addition to reducing going out and not exercising in the morning as mentioned above, there are two other health-preserving methods worth considering. Drink more Luo Han Guo tea: