There are two reasons for being sleepy after lunch: the first reason is that after a morning of work and good study, the body and also the brain are in a tired state. After relaxing, the patient will show sleepiness. After eating, the peristalsis of the stomach and intestines will increase. In this case, the blood will be redistributed, like the distribution of the gastrointestinal tract will be more, which will lead to a decrease in the blood allocated to the brain, and the patient will also experience dizziness and sleepiness. Napping can improve the fatigue of the patient’s body and brain. It is recommended that patients take a break for about 20 minutes after lunch and sleep for 20-30 minutes at noon, which can generally relieve the fatigue of the patient’s body.