Symptoms such as body aches, weakness, and chills can be caused by over-exercise, as well as pathogenic infections such as bacteria and viruses. The reason for this symptom is that lactic acid builds up in the muscles after exercise, causing the symptoms of body aches and weakness. At the same time, chills can occur due to the fact that less clothing is worn and sweat removes heat from the body after exercise. Bacteria or viruses and other pathogenic bacteria into the body, the body’s anaerobic fermentation increases, producing a large amount of lactic acid, the emergence of body aches and weakness, at the same time, the pathogenic bacteria will disrupt the brain’s temperature center, resulting in the brain to the environmental temperature sensory error, the body chills, part of the patient may appear the symptoms of shivering. The occurrence of body aches and pains, weakness and coldness may also be caused by other diseases or pathogenic bacteria, it is recommended that patients go to a professional hospital, after clarifying the cause of the disease under the guidance of the doctor’s treatment, and comply with the doctor’s instructions to take medication, and the patient’s body will not be able to feel the cold.