Fog weather layer is stable, not conducive to the diffusion of air pollutants, the lower atmosphere has a large number of harmful gases accumulated. At this time it is best not to go out for physical activities, in order to avoid inhaling too much harmful pollutants and induce bronchitis, pharyngitis and rhinitis and other allergic diseases.
Foggy days have a lot of water vapor, and the air is filled with water vapor condensation. People in the exercise exercise, the body oxygen consumption increases, breathing is bound to deepen and speed up, thus inhaling more fog, which will hinder the gas exchange of the alveoli, and lead to lack of oxygen in the brain, dizziness and dizziness and other uncomfortable symptoms.
The air humidity is high on foggy days. When people run, climb mountains or engage in other sports, muscle and bone activity is strengthened, resulting in a significant increase in body heat production and the need to sweat a lot to dissipate heat. Exercise in the fog, it will be due to water vapor pressure and humidity and lead to poor skin cooling, sweat is not easy to evaporate, so that people feel uncomfortable all over the body.
When there is fog, the sky is hazy and visibility is poor. People in the fog running, cycling and other sports, due to the road vehicles and poor visibility, a little careless, it is easy to accident. Especially the elderly vision and hearing are relatively poor, slow reaction, more should not go out to exercise in the fog.