Wanting to sleep after breakfast should be considered a normal physiological phenomenon, but also may be caused by the lack of sleep at night, and finally to exclude the possibility of disease. 1. The blood supply to the gastrointestinal tract is enhanced after eating, and the blood supply to the brain is reduced, so there will be a sleepy state, which is a normal physiological phenomenon. 2. If you don’t get enough sleep at night, you will feel sleepy in the morning after eating, and you need to catch up on your sleep to relieve your symptoms. 3. Diseases may also cause symptoms of sleepiness, such as hypothyroidism, because the body’s thyroid hormone secretion is insufficient, so there will be fatigue, chills, slow heart rate and other symptoms. If the long-term symptoms of fatigue and sleepiness, or the need for timely medical examination, because the possibility of disease, to determine the cause of the active treatment can be.