Cold is an acute infection of the upper respiratory tract, which can cause a variety of symptoms, including nasal congestion, runny nose, sore throat, fever and so on. The general body aches and weakness caused by the cold are mainly caused by two reasons: 1. Inflammatory reaction caused by the reproduction of virus in the body, the virus in the body after the cold will continue to replicate in the blood and enter the body’s cells to cause harm. The immune system of the body makes a corresponding defense response to the virus, thus triggering a systemic inflammatory response, resulting in the symptoms of generalized aches and pains. 2, the virus can also act as a fever-causing factor causing the symptoms of fever, when the body is feverish, especially when the body temperature exceeds 38.5 ℃ will seriously affect the biological activity of various chemical enzymes in the body, further affecting the biochemical reactions in the body, strengthening anaerobic enzymes, lactic acid Excessive production of lactic acid. Fever promotes metabolism in the body and consumes a large amount of glycogen and energy materials, which causes generalized pain and weakness.