What is the reason for feeling sleepy after eating?

People feel sleepy after eating, especially in spring. If you are a fat person, you are more likely to feel sleepy. Sometimes, if time permits, you can take a short break. Sometimes, you are busy with work or study and have no time to rest, which makes you feel uncomfortable. You must be wondering why you feel sleepy after a full meal. Here we will introduce the reasons and countermeasures for feeling sleepy after a full meal. We hope it will be helpful to you.

This is related to the human body's blood supply. The main function of blood circulation is to provide tissues and organs with substances needed for metabolism and to transport metabolic products. The potential capacity of the entire cardiovascular system is greater than the total circulating blood volume. If blood vessels throughout the body dilate at the same time, the circulating blood volume will not be enough to fill all blood vessels with blood. This will result in venous blood being unable to return to the heart, arterial blood pressure may drop to zero, and blood circulation will stop. Therefore, at any given moment, a portion of the blood vessels in the body must be in a state of contraction to varying degrees;

The other part is in diastolic state. At the same time, the metabolic intensity of the body is different when it is at rest and when it is active. The metabolic intensity of different tissues and organs is also different at the same time, and the metabolic intensity of the same tissue and organ is different at different times. This requires the blood circulation system to change its functional activities according to changes in the activity status of the whole body and various tissues and organs to adapt to the needs of the life activities of the whole body and various tissues and organs.

After eating, the food that enters the stomach will be further mechanically stirred and crushed by the stomach, and at the same time, it will be fully mixed with the digestive juice secreted by the stomach - gastric juice, and then sent to the duodenum, and further into the small intestine for full digestion and absorption. During the process of digestion and absorption of food, on the one hand, the motility of the stomach and intestines is strengthened, and on the other hand, the secretion of the digestive glands is enhanced. The blood in the body must be concentrated in the stomach and intestines to help digest and absorb food. As a result, blood supply to the stomach and intestines increases, resulting in a decrease in blood flow to the head and limbs. If the brain is not supplied with enough blood, you will naturally feel sleepy.