As the weather gets cold and foggy.

Fog is a common weather phenomenon in early winter. Under certain weather conditions, a large number of suspended water droplets and ice crystals are accumulated in the near-surface atmosphere, which makes the horizontal visibility less than 1000 meters. Due to the serious air pollution in the surface layer, the air quality will be seriously damaged due to the continuous collision and adsorption with pollutants during drifting.

Scientific research shows that clouds are mainly composed of Foucault pathogens except water and other microorganisms that do not move independently. Foucault pathogens cause harm to human bodies in three ways:

1. After entering human body, it will hinder blood circulation, consume human nutrition and cause internal injuries;

2. Mechanical traction damages tissues and organs, leading to fever and inflammation;

3. Inhibit and hinder the normal blood circulation, leading to the occurrence of cardiovascular diseases.

Foggy weather is not suitable for outdoor sports.

You can stop some outdoor activities, especially some strenuous exercise, in foggy days. In this weather, the air pressure is relatively low, which is easy to induce heart disease, especially for people with heart problems.

In foggy days, we should try to reduce the time outdoors. You'd better wear a thin mask when you go out, and wash your face and expose your skin immediately after you come back. At the same time, we should pay attention to a light diet and eat less irritating food. If you feel unwell, you can take some cold granules or buccal tablets preventively. Foggy weather is easy to induce arthritis, so you should wear more clothes and pay attention to moistureproof and warmth.

Beware of "fog hurts the body"

According to the measurement, the proportion of harmful substances such as acid, alkali, salt, amine, phenol, dust and pathogenic microorganisms in fog drops is several times higher than that in ordinary atmospheric water drops. The harm of fog to human health is very hidden. For example, fog often creates a hazy landscape that induces people to exercise and play in the fog. As we all know, with the increase of activity, people's breathing will inevitably deepen and accelerate, and naturally absorb more harmful substances in the fog, which is easy to induce or aggravate many diseases such as tracheitis, pharyngitis and conjunctivitis. Traditional Chinese medicine calls it "epidemic qi", which may be life-threatening to the elderly and infirm.

When morning exercisers exercise, due to the strengthening of muscle and bone activities, the heat production in the body increases. In order to maintain the heat balance, it is necessary to use perspiration to dissipate heat. However, in the fog, the air pressure is high and the air humidity is high, so sweat is not easy to evaporate, which is not conducive to skin heat dissipation and hinders gas exchange in alveoli. In this way, people will feel sultry and uncomfortable, with chest tightness, breathlessness, fatigue, dizziness and other symptoms, and it is easy to cause colds, hypertension, coronary heart disease, respiratory diseases, cerebral hemorrhage and so on.