If the patient exists to sleep in the middle of the night all tired, it may be due to the existence of excessive fatigue, osteoporosis, or sleep in the bed is not appropriate, and so on. The details are as follows. 1. Excessive fatigue. Such patients may have performed intense labor or exercise before sleeping. This may lead to excessive fatigue in all parts of the body. Thereafter, the patient may fall asleep very easily. During sleep, a large amount of lactic acid may gradually accumulate in the muscles of the body, which may lead to body aches and fatigue. 2. Osteoporosis. This kind of patients may develop due to old age, malnutrition and other factors. After the onset of the disease, the first symptom of fatigue is often caused by no obvious triggering factors. This symptom is most noticeable during sleep at night. 3. Sleeping in an inappropriate bed. Some patients sleep on too hard or too soft beds. The above situation will easily lead to excessive pressure on the relevant parts of the patient or the existence of a wide range of muscle spasms. Afterwards, patients tend to wake up in the middle of the night or in the morning feeling weak and achy. It is recommended that when the above situation occurs, first pay attention to rest, and change to sleep on a hard board bed and strengthen the warmth, if not relieved after 3 to 5 days, the patient must go to the hospital to find out the cause of the disease.