Back pain in the morning may be caused by cold after sleeping. When the back fascia starts to contract due to coldness caused by not covering the bed properly, the muscles become painful due to ischemia. The pain is characterized by soreness and is relieved by applying warm compresses and rubbing. The duration is not long, 1-2 days, and the symptoms will be gradually relieved. In addition, it can not be ruled out that the patient sleeps in a bed that is too soft, because soft beds do not support the spine well, so the patient may wake up with lower back pain or tiredness, and the symptoms will be relieved after changing the mattress.