After meals, human gastrointestinal peristalsis is very frequent, blood circulation is accelerated, and the digestive system begins to exercise in an all-round way. If you smoke at this time, the smoking effect of lungs and whole body tissues will be greatly enhanced, resulting in a large number of harmful components being absorbed, which will have a strong stimulating effect on breathing and digestive tract, which will undoubtedly bring greater harm to human functions and tissues than usual smoking.

Taboo 2: Brush your teeth immediately after meals and loosen your pants.

Some people like to brush their teeth after meals, but if they brush their teeth immediately, they will damage the loose enamel. In addition, although relaxing the belt makes the stomach comfortable, it will lead to the decrease of abdominal pressure, force gastroptosis, increase the load of digestive organs and ligaments, aggravate gastrointestinal peristalsis, and easily lead to volvulus, intestinal obstruction and gastroptosis.

Taboo 3: Drink strong tea immediately after meals.

Tea contains a lot of tannic acid. Drinking strong tea after meals will make undigested protein combine with tannic acid to form a precipitate, which will affect the absorption of protein. The substances in tea also hinder the absorption of iron. Developing the bad habit of drinking strong tea for a long time after meals is easy to cause iron deficiency anemia. In addition, drinking tea immediately after meals, a lot of water enters the stomach, diluting the digestive juice secreted by the stomach, affecting the digestion of food by the stomach.

Taboo 4: strenuous exercise after meals.

There is a folk proverb: Take 100 steps and live 99 steps after meals, which means that proper exercise after meals can help digestion and is beneficial to human health. However, if you engage in strenuous activities immediately after meals, such as playing ball games, running, engaging in heavy physical labor, etc. , will affect the digestion and absorption of food, harmful to the body. Because the muscles of limbs need more blood supply during strenuous exercise or labor, the blood supply of gastrointestinal tract will be relatively reduced. Digestion and absorption are bound to be affected. Moreover, there is more food in the stomach after meals, and the weight is also great. If you exercise or overwork, it is easy to cause abdominal pain, gastroptosis and other diseases. So exercise or labor should be arranged after meals 1 hour.

Taboo 5: Go to bed immediately after meals.

After meals, due to the increase of blood flow in digestive organs, the blood supply to the brain is relatively reduced, and people will feel tired and even sleepy. This phenomenon is more obvious after lunch. If you sleep immediately after a meal, gastrointestinal peristalsis will slow down, digestive juice secretion will decrease, and food will not be fully digested. Especially children will cause digestive dysfunction, indigestion and malabsorption, which will cause nutritional deficiency for a long time. In addition, food stagnation in the stomach will also promote brain excitement and make it difficult for people to fall asleep. Even if you fall asleep, there will be gastrointestinal disharmony such as gnashing your teeth, dreaming and having nightmares. Therefore, they should wait for a while before going to bed after meals.