The total sleepiness at 7 or 8 pm, in addition to the biological clock caused by normal living habits, is mainly considered to be related to physical weakness, poor mental state, iron deficiency anemia and other reasons. Patients should adjust their work and rest and relax. 1, normal habits: patients usually have more regular work and rest habits and have developed the habit of going to sleep at 7 or 8 p.m. If they suddenly change their work and rest, they will have symptoms of sleepiness at the corresponding time. 2, physical weakness: people with physical weakness lack energy and are easily sleepy and tired, and the symptoms are more obvious at 7 or 8 p.m. Patients can eat more food rich in nutrients, such as eggs, lean meat, etc., to enhance physical fitness; 3, poor mental state: mental stress, excessive fatigue, long-term stay up late, etc., so that the patient’s mental and physical state of exhaustion, sleepy symptoms, in serious cases, can lead to plant nerve disorders. Patients should relax their nerves, get enough sleep and pay attention to rest; 4. Iron deficiency anemia: Due to the decrease of iron in the patient’s body, hemoglobin decreases and the oxygen content of blood decreases, which in turn leads to sleepiness at night, dizziness and other uncomfortable symptoms, patients can take iron supplements such as ferrous sulfate for treatment. In addition, you can eat more iron-rich foods, such as spinach, soy products, etc.; 5. Other: hypertension, hyperlipidemia, atherosclerosis and other diseases can lead to ischemia and hypoxia in the brain arteries of patients, and thus the symptoms of easy fatigue at night. Patients should take Metoprolol, simvastatin and other drugs under the guidance of professional doctors. Patients are advised to perform moderate physical exercise to enhance cardiopulmonary function and reduce weight to lower vascular pressure. In addition, the environment can also have an impact on the patient’s sleep. In summer, when the day is long and the night is short, the patient’s sleep time is reduced, and if the patient is too tired during the day, the patient is prone to symptoms of dozing off and wanting to sleep at 7 or 8 pm.