Post-meal sleepiness refers to the symptom of easy sleepiness after a meal. Generally, after a meal, the stomach needs to digest food, peristalsis is accelerated, and blood is concentrated in the stomach, and the blood in the brain is relatively less than usual, so it is easy to be sleepy. Or when the brain has insufficient blood supply, there will be dizziness after meals sleepy feeling. The reason why people feel sleepy after meals is that the blood sugar level increases after meals, which inhibits the neurons in the brain that keep people awake and alert. In addition, it is clinically found that most people with low blood pressure have this symptom of sleepiness after meals. There are also factors such as personal napping habits that can cause symptoms of post-meal sleepiness, and we should pay attention to the influence of biological clock. In addition, there are also some diseases that may cause postprandial sleepiness. The diagnosis of postprandial sleepiness is relatively simple and can be determined by the patient’s symptoms of being particularly sleepy, unclear, depressed and wanting to sleep after eating every day. When sleepiness strikes, you can temporarily put down the work at hand and get up to move your limbs, because keeping a certain posture for a long time will reduce the amount of circulating blood, which will limit the function of the brain and internal organs, thus producing fatigue. Timely activities can relax the muscles and blood, and make the joints, so that the brain is excited.