The causes of total sleepiness and lack of energy are physiological and pathological. Physiological reasons such as lack of sleep time, pathological reasons such as abnormal liver function, cerebrovascular blood supply, anemia, cervical spondylosis. First, physiological reasons: some people are usually busy with work and study, as well as social functions, shortage of sleep time, or noisy sleep environment, resulting in less time for deep sleep, there will be total sleepiness, no spirit of the situation. Due to the usual tension, anxiety, mental stress, depression, etc., may lead to difficulties in falling asleep, early awakening, poor sleep quality, etc., which leads to total sleepiness and lack of energy II. pathological causes: 1. liver function abnormalities: due to long-term drinking and socializing, harming the liver, resulting in high transaminases, liver insufficiency, physical strength, which also leads to total sleepiness and lack of energy; 2. cerebrovascular blood supply deficiency: may be due to cerebrovascular Stenosis and atherosclerosis, resulting in insufficient blood supply to the brain, resulting in total sleepiness and lack of energy; 3, anemia: due to low hemoglobin and red blood cells, effective oxygen supply, insufficient blood supply, may also appear total sleepiness and lack of energy; 4, cervical spondylosis: due to cervical disc protrusion compression of the vertebral artery and other blood vessels, affecting the blood supply to the brain, may also lead to total sleepiness and lack of energy. In short, if there is total sleepiness and lack of energy, excluding lack of sleep, it is recommended to improve the blood routine, biochemical series and other tests to clarify the specific causes, and then further treatment to avoid delaying treatment.