Patients with cold and runny nose are not recommended to swim. The fact that cold and runny nose symptoms have already appeared indicates that the inflammatory reaction in the body is relatively strong. At this time, the most common is the infection of pathogens, such as viruses, bacteria, mycoplasma, chlamydia, rickettsia, etc., so that the mucous membrane of the upper respiratory tract has already appeared obvious congestion, edema, with inflammatory secretions exuding. If you swim at this time, it is likely to aggravate the condition because of the cold, make the symptoms of upper respiratory tract infection more obvious, and even make the condition worse, and gradually spread the inflammation to other parts, such as otitis media, tracheitis, bronchitis, and in serious cases, may also lead to pneumonia. Therefore, this is the time to take proper bed rest, keep warm and avoid getting cold. Through standardized treatment, generally about 1 week can be treated and improved, and after complete cure, it is possible to swim appropriately under the condition of keeping warm and enhancing the heart and lung function at an optional time.