Cold body is not necessarily three diseases, may be due to physiological factors or infections, anemia and other pathological factors. 1. Physiological factors: when the environment is colder, you can feel cold. When there is not enough sleep, you can also feel cold. This is a normal physiological phenomenon. 2. Infection: When the patient has multiple infections, fever may occur. At this time, the body temperature will rise, and the patient may experience chills and chills. 3. Anemia: In anemia, the blood will give priority to the oxygen supply to the heart, brain and other important organs, the blood flow of the body surface capillaries is relatively reduced, and the patient may feel cold at this time. The above are only some of the common causes. If you still feel cold after adding more clothes and resting sufficiently, it is recommended that you consult a doctor for a clear diagnosis and follow the doctor’s instructions for targeted treatment.