Reasons for body chills: One, lack of sleep can lead to body chills. If the body does not get a good sleep for a long time, there will be an increase in the level of hormones in the body, the blood will be concentrated in the parts of the body that need it most, that is, the main organs, so that the body’s skin temperature will drop, and the body will feel cold. Second, high blood sugar levels can also cause the body to get cold. If you feel cold hands and feet, or with tingling, numbness, you should be alert to whether you are suffering from diabetes. Because of the high blood sugar condition, it will lead to damage to the capillaries supplying blood to the nerves of the hands and feet, and this time the blood cannot be supplied adequately, and people will feel cold and numb. Third, internal infection can cause the body to get cold. If you have a fever, the fever will make the body temperature rise and make you shiver. Generally, the normal body temperature is around 37℃, the body temperature rises when fighting the flu, and the body temperature rises relative to the ambient temperature around you will feel cold. Fourth, iron deficiency anemia leads to body chills. The whole body may be cold because of iron deficiency anemia, blood red blood cells combined with every location in the body to transmit oxygen, anemia, the blood will give priority to the heart and brain oxygen supply, the body surface blood vessels are closed, this situation will feel cold.