You can take a walk when you have a fever, but you should avoid excessive exercise. In the case of fever, the body functions more weakly, in which case, proper bed rest should be given, while the cause of the fever should be judged accordingly. The fever may be caused by infectious factors or other non-infectious factors, and if the fever lasts for a long time, then targeted treatment should be given. In general, the common methods of cooling are oral medication or physical cooling, including oral non-steroidal anti-inflammatory drugs, or through warm water baths to achieve the purpose of cooling.