The common cold is primarily a clinical disease characterizing symptoms such as upper respiratory tract infections by various microbes, resulting in coughing, sputum production, nasal congestion, runny nose, and fever. In severe cases, some patients might also experience headaches. Typically, after the onset of a cold, it is generally recommended that patients consume nutrient-rich foods and keep warm while avoiding exercise. If a headache occurs due to the cold, it is advised to rest at home, take some cold medicine to alleviate the headache, and wait until the body has recovered before engaging in activities like running. It is not recommended to perform intense physical activities during the acute phase of a cold when feeling unwell, as this might exacerbate the condition. (The use of medication should be under the guidance of a doctor.)