The first thing to look at is the quality of sleep at night, whether there is a mental depression factor, and whether the work and rest is regular. Excluding these factors such as irregular life and rest, poor sleep quality, etc., see if there are pathological diseases, such as hypothyroidism, the patient will show mental depression, drowsiness, and weakness. Patients with hypertension, hyperlipidemia, high blood viscosity, etc. will show drowsiness. After ruling out diseases, we should develop good habits of early to bed and early to rise, go to bed before 23:00 at night, get up at 6:00 or 7:00 in the morning, do more outdoor exercises and receive more sunlight, which can make people energetic.