Sleepy after lunch may be related to the lack of blood and oxygen to the brain and fatigue after work. Sleepy after lunch, mainly because after eating, the body will accelerate blood circulation and redistribution, more blood flow to the intestines to help the stomach to digest food, so the brain’s oxygen supply will become less, brain ischemia and lack of oxygen will lead to sleepiness. Sleepy after lunch may also continue to work in the morning, causing excessive fatigue of the brain, the brain and the body need to restore normal work through appropriate rest. In summary, sleepy after lunch is a normal phenomenon, but pay attention to eat light, easy to digest food, so as not to aggravate the burden on the intestinal tract.