1, affecting the weight loss effect: after eating, the parasympathetic nerve in the body will be inhibited. At this time, exercise will not only affect the digestive system of the body, but also seriously affect the weight loss effect.

2, gastrointestinal irritation leads to adverse reactions: just after eating, the food in the stomach will vibrate up and down with exercise, which will cause mechanical stimulation to the stomach, leading to adverse reactions such as stomach cramps and vomiting, so I can't stand up after a meal. That's the reason.

3, seriously affect the normal digestive function of the human body: exercise to lose weight requires a lot of blood to transfer oxygen, and after eating, the human body will concentrate a lot of blood in the stomach and digest the food just eaten as soon as possible. This will make the blood that should be concentrated in the gastrointestinal tract disperse to all parts of the body, resulting in insufficient blood supply to the gastrointestinal tract, reduced digestive function, disordered digestion and absorption, and seriously affecting health.

Once it causes gastrointestinal diseases, it will accompany you for life. Pay attention to your diet when you eat. If you don't pay attention, it will be very painful, really uncomfortable. Therefore, exercise is important, but we should also be cautious and be kind to the stomach.

4. Inhibit fat decomposition: The insulin secreted by the human body will show an upward trend after meals, and the increase of insulin will inhibit the decomposition of fat and fail to achieve the purpose of losing weight.

How long can I exercise after a meal?

1, light exercise within half an hour after meals is the most reasonable, such as walking and square dancing.

2. Moderate exercise should be arranged one hour after meals, such as jogging and weight-loss exercises.

3. High-intensity sports can be carried out two hours after meals, such as basketball games and football games.

If you want to lose weight, you'd better exercise at night. Night is the key time for fat synthesis. At this time, glucose and amino acids can be easily converted into fat and accumulated in the body.

Exercise for 30 minutes after dinner to 1 hour, three or four times a week, which is a better choice. Exercise at night can help food digest faster and prevent fat from accumulating in the body. But no matter the intensity is high or low, the nervous system will be in an excited state, so go to sleep after 1 hour.

Extended data:

Taboos after meals:

1, eat fruit after meals. Eating fruit immediately after a meal will affect the digestive function. Because it takes 1 ~ 2 hours for food to enter the stomach to be gradually eliminated. If you eat fruit immediately after a meal, the fruit will be blocked by the food you ate before and cannot be digested normally.

2. Drink strong tea after meals. Tea contains a lot of tannic acid. Drinking strong tea after a meal will make the undigested protein combine with tannic acid to form a precipitate, which will affect the absorption of protein. The substances in tea will also hinder the absorption of iron, and form a bad habit of drinking strong tea after meals for a long time, which is easy to cause iron deficiency anemia.

Drinking tea immediately after a meal, a lot of water enters the stomach, which will dilute the digestive juice secreted by the stomach, thus affecting the digestion of food by the stomach.

3. Smoking after meals. This practice is extremely harmful to the human body. Because the gastrointestinal peristalsis of the human body is very frequent after meals, the blood circulation is also accelerated, and the digestive system has started a comprehensive movement.

If you smoke at this time, the absorption of smoke by lungs and whole body tissues will be greatly enhanced, resulting in a large number of harmful components in smoke being absorbed, which will have a strong stimulating effect on breathing and digestive tract, and will undoubtedly bring much more harm to human functions and tissues than usual smoking.

4. Drink water after meals. Drinking water immediately after a meal will dilute the gastric juice, make the food in the stomach enter the small intestine before it can be digested, weaken the digestive ability of gastric juice, and easily lead to gastrointestinal diseases. If you drink soda after meals, it will be even worse for your health. The carbon dioxide produced by soda easily increases the intragastric pressure, leading to acute gastric dilatation.

5. Sing karaoke after dinner. Just after eating, the stomach capacity increases and the blood flow increases. Singing at this time will make the diaphragm move down and the abdominal pressure increase, which will cause gastrointestinal discomfort such as indigestion.

It is best to sing karaoke after the food is digested normally 1 hour, or simply sing before eating.

6. Drive after dinner. Due to the need of digestion after meals, most of the blood is concentrated in the stomach, and the brain is in a state of temporary ischemia. At this time, driving is prone to operational errors and car accidents. So it is safer to drive 1 hour after meals.

People's Daily Online-Exercise after meals is harmful to health? How long is the appropriate interval?

People's Daily Online-Six habits after meals are equal to chronic suicide.