How long it takes for muscle soreness to go away after a cold varies from person to person and there are individual differences. But overall, the course of a cold is 5-7 days. The flu is caused by a viral infection, commonly known as a cold, also known as acute rhinitis or upper respiratory khat. The onset of the disease is acute, mainly manifested by nasal symptoms such as sneezing, nasal congestion, clear watery nose, but also cough, dry throat, itching or burning sensation, and even postnasal drip sensation, the latter three manifestations are related to the inflammatory mediators induced by the virus, resulting in the afferent nerves of the upper respiratory tract, hypersensitive state. 2-3 days later the nasal discharge thickens, and may be accompanied by sore throat, headache, lacrimation, dull taste, breathlessness, hoarseness, etc. Sometimes it can be due to pharyngo-osteitis to hearing loss. In severe cases, there is fever, mild chills and headache, and muscle aches and pains are sometimes present with the cold. The overall course of the cold is 5-7 days, and it usually heals in 5-7 days, with a delay in the course of the illness with complications. Patients with muscle soreness can perform light aerobic exercises such as walking or jogging to reduce lactic acid build-up. Microwave therapy or oral sodium bicarbonate can also be used to reduce symptoms.