1. Exercise: swimming. Because swimming can make our cardiovascular system strong, increase the amount of breathing every time and strengthen the ability to exhale. The best way for asthma patients to choose outdoor sports is running, cycling and walking. These are simple aerobic exercises, which are simple, safe and reliable. If asthma is not very serious, you can exercise by running and cycling. If asthma is severe, take a walk.

2. Exercise time and intensity: the intensity of each exercise is 60%-90%. After the training intensity reaches 75%, we should always pay attention to the frequency and rhythm of breathing. If you exercise too much, it will cause asthma. If you have a little cough or shortness of breath during practice, you should stop training immediately. Symptoms of asthma can't appear in training.

3. Exercise environment: Don't exercise in a cold environment, because the oxygen content in cold air is very low. For example, asthma patients are not suitable for exercising at higher altitudes. And don't exercise in the morning, at night, when the air is dry and on occasions. Because the oxygen content in these time periods and the environment is relatively low, a little exercise may cause asthma. Asthma patients are best suited to exercise in humid weather.