The body is very tired and fatigue, may be related to lack of sleep, excessive exercise, mental illness and many other reasons. 1. Lack of sleep: If you don’t get enough sleep, your brain and body won’t get enough rest and recuperation, and you will experience various symptoms such as fatigue, weakness, and immune dysfunction. Do not drink coffee, tea and other stimulating substances before going to bed. You can listen to soothing music, so that the whole body and mind to relax, so as to improve the quality of sleep, to ensure that the sleep environment is quiet. 2. Excessive exercise: appropriate exercise is good for health, but too much exercise will make the body’s immune function is impaired, affecting health, leading to physical exertion, weakness, fatigue and other symptoms. Physical exercise should be appropriate, in order to exercise after the spirit of fullness, do not feel fatigue as the standard. 3. Mental illness: such as depression patients, it will be obvious low mood, insomnia, poor diet, decreased energy, physical fatigue no spirit and a series of state of mind as well as the body of the negative performance. It is recommended to go to the hospital as soon as possible for formal psychotherapy, and follow the doctor’s instructions to use antidepressant drugs such as promethazine to control. The above are only some of the common causes. If you always feel very tired and fatigue, you should go to the hospital in time, after a clear diagnosis, follow the doctor’s instructions for standardized treatment. The use of drugs must follow the doctor’s instructions, not blindly use their own drugs, so as not to cause adverse consequences.