Why can’t I exercise immediately after a meal?
Running or exercising after a meal is not advisable. Because the digestive organs need a lot of blood supply after eating, work intensely. If you run or exercise at this time, it will inevitably cause the skeletal muscle to take away a lot of blood, resulting in digestive tract ischemia, not only the gastrointestinal motility is weakened, but also the secretion of digestive juice will be significantly reduced, which will cause indigestion.
Running or exercising after a meal sometimes causes abdominal pain. Why is this? The reasons are as follows:
- After the meal, the stomach is filled with food, and the stomach is shaken during exercise, so that the mesentery connecting the gastrointestinal tract is pulled, causing abdominal pain.
- The distribution of blood during exercise shifts from the digestive tract to the skeletal muscle, causing ischemia of the digestive tract and causing gastrointestinal smooth muscle spasm, resulting in abdominal pain.
- The body’s oxygen demand increased during exercise, the usual lack of exercise in people with small lung capacity, then the effort to gasp is prone to breathing shallow and fast. This causes the negative pressure in the chest to be reduced, resulting in obstruction of liver blood flow, which leads to liver congestion, increased hepatic capsule tension and liver pain, which is manifested as pain in the right upper quadrant.
- Other gastrointestinal diseases, including appendicitis, occur just after exercise.
In the first three cases, abdominal pain will soon be relieved after the exercise stops. The fourth case is organic disease. The pain is longer than the first three, and most of them will gradually increase. For this kind of abdominal pain, you should go to the hospital for treatment.
How long after a meal can exercise
The interval between the meal and the time before exercise is mostly determined by the meal and dosage. Other decisive factors include age, physical condition and exercise intensity. Suppose the reader is a normal middle-aged person! If you have a large amount of food before exercise, and most of the foods containing high amounts of protein and fat should be more than two hours; if the amount is small With carbohydrates in mind, the interval can be shortened to 30 minutes to 1 hour. Any change is best done in a gradual manner, but if there are any muscle or digestive problems, you have to pause.
In general, people who do not exercise regularly and those who are weak, it is best to exercise 0.5 to 1 hour after a meal. Formal exercise and intense competition are best done 1.5 hours after a meal. It is not advisable to exercise vigorously after a meal. It does not rule out easy exercise after a meal. Everyone can do moderate exercise according to their own conditions, such as walking or doing other minor activities, which is beneficial to health promotion.
The benefits and disadvantages of walking after a meal
In terms of digestive physiology, the stomach is in a state of fullness after a meal, and it is necessary to ensure that the gastrointestinal tract has sufficient blood supply for preliminary digestion. Taking a proper rest after a meal will ensure that the gastrointestinal tract can get more blood supply.
According to recent brain physiology experts, some people’s “satisfaction” is that the stomach feels full, but the nutrition is not absorbed into the body, and the body is still in a state of “hunger.” At this time, rushing to get up, there will be a part of the blood concentrated in the exercise system, which delays the secretion of digestive juice, destroys the normal digestion of the stomach, and easily induces functional dyspepsia.
Therefore, “walking after a meal” is not suitable for all people. It is only suitable for people who usually have less activities, especially those who work at long hours, and also for people who are fat or have too much stomach acid. If these people walk for 20 minutes after a meal, it will help promote gastrointestinal motility, secretion of gastrointestinal digestive juice and digestion and absorption of food, which is beneficial to health. But at least 20 minutes after the meal, start walking again.
The energy consumed in a hurry after a meal is actually overdrafting the physical energy before eating. The blood in the human body is more distributed in the active parts of the trunk and limbs, so that the blood supply to the gastrointestinal tract is correspondingly reduced. Secretion is also reduced. At this time, if you do something that is more sensitive to sensitivity and accuracy, such as driving, it is easy to cause adverse consequences. According to a survey conducted by experts from the American Health Care Association, many car accidents occurred related to the driver’s immediate driving after the meal. After the meal, he sat in the driver’s cabin, the blood was concentrated in the stomach, the brain was deficient in oxygen, and the attention was difficult to concentrate. The speed is slowed down and the flexibility is reduced.
Some people are suitable for “can’t walk” after a meal. This refers to people with poor health, especially those with stomach ptosis. These people should not take a walk after a meal, even the general walking should be reduced, you can choose to lie flat for 10 minutes after a meal. Because the food in the stomach is full after meals, the upright activity at this time will increase the vibration of the stomach, increase the burden on the stomach, and cause or aggravate the sagging of the stomach. Patients with cardiovascular and cerebrovascular diseases are most likely to exercise after meals. As the gastrointestinal activity increases after meals, the blood flow in the gastrointestinal tract increases, and the blood flow in the brain decreases accordingly.