The common causes of sleeping with aches and pains at night are as follows: First, strenuous exercise: recent strenuous sports or a lot of physical labor can cause a large amount of lactic acid to accumulate in the skeletal muscles of the whole body, so the whole body can appear sore and painful, especially in the quiet state at night, this symptom will be especially obvious. Second, fever: Consider fever at night. During the period of rising body temperature, the speed of sugar metabolism will increase, and the speed of glycolysis will increase, so there will be a large accumulation of lactic acid, a product of glycolysis, in the joints, muscles and bones of the whole body, so you will feel soreness, pain and weakness in the muscles of the whole body when you sleep.