Patients are sleepy at five or six o’clock in the afternoon every day for several reasons: first, consider the physiological causes caused by. If the patient did not take a lunch break at noon, after a day of work and exertion will have the performance of physical fatigue, will be manifested as sleepy, want to sleep. The second aspect, if the patient has not eaten at 5 or 6 p.m., the sleepiness may be caused by hypoglycemia, and this condition will often recur, causing the patient to be insensitive to hypoglycemic reaction and manifesting as symptoms of sleepiness. The third aspect is that sleepiness at 5 or 6 pm every day may be caused by elevated blood pressure fluctuations, and attention should be paid to the measurement of blood pressure. If the patient’s blood pressure is elevated, consider that it is caused by the above-mentioned factors.