You cannot swim when you have a cold or cough. A cold is an infectious disease that causes cough, fever, nasal congestion, runny nose, sore throat and other symptoms, causing a greater degree of exertion on the organism. Swimming is a kind of exercise, which requires more energy in the process of swimming, so it is not conducive to the recovery of the disease. At the same time, the symptoms of coughing during swimming can easily cause choking and coughing, resulting in the water in the pool or pond entering the trachea and bronchi, which may cause secondary bacterial or other viral infections, leading to complications of acute trachea and bronchitis, or even pneumonia, aggravating the condition and prolonging the course of the disease, causing more damage to the body. Therefore, swimming is not allowed when you have a cold and cough, and it is carried out when the cold is cured.