Is foggy weather suitable for military training?

Fog is not suitable for military training because it contains many elements harmful to human health. It is not advisable to exercise outdoors in foggy days to prevent diseases such as tracheitis from being induced or aggravated.

Fog is the condensation of water vapor in the air, and many dust, bacteria or other particles in the condensation are "dirt". The proportion of harmful substances such as acid, alkali, salt and pathogenic microorganisms in fog drops is much higher than that in ordinary atmospheric water drops. Outdoor sports in foggy days will cause people to inhale harmful substances in foggy days, which will affect all aspects of human functions, especially the respiratory system, and easily induce or aggravate diseases such as tracheitis, pharyngitis and conjunctivitis.