When you have a cough, it is best not to run. First of all, running is likely to aggravate the cough and is not conducive to cough recovery. During running, the demand for oxygen is relatively high, and at this time, breathing is deep and fast, and the air is not handled in a timely manner, so a lot of dirty air will enter the respiratory tract directly, which will cause greater irritation to the mucous membrane of the respiratory tract, and if you already have a cough, the process of running will cause the cough to become more serious. And during coughing there is already inflammation in the respiratory tract, the utilization rate of oxygen is not very high at this time, if running oxygen supply will be insufficient, it is easy to occur the phenomenon of hypoxia, resulting in headaches, which is also very unfavorable to the recovery of cough. Therefore, it is best not to run during coughing. If you want to exercise, you can take an appropriate walk, which will help to relieve discomfort and rest as much as possible during coughing.