Have a rest after fitness and before eating. Sports-loving friends all know that you can't take part in strenuous exercise after meals. If you take strenuous exercise after meals, the blood that is participating in gastrointestinal digestion will be redistributed and flow to muscles and bones, which will affect gastrointestinal digestion and absorption. Taking part in strenuous exercise immediately after meals will also cause abdominal pain and discomfort due to gastrointestinal vibration and mesentery involvement, which will affect human health.
First, the cerebral cortex center responsible for skeletal muscle and myocardial movement is in a relatively excited state during exercise, while other parts are in a relatively inhibited state, gastrointestinal peristalsis is weakened, and digestive juice secretion is reduced.
Second, a large amount of blood is distributed in the exercise system during exercise, and the blood in the digestive system is reduced and the function is reduced. Even if you stop exercising, you will still maintain the above situation for a short time, so eating immediately after exercise will affect the digestion and absorption of food, which is not good for your health, and will also cause gastrointestinal diseases such as indigestion and chronic gastritis over time.
Before exercise: Before exercise, it is best to eat some high-fiber biscuits, raisins or fresh fruits between 1-2 hours.
After exercise: Eat something about an hour after exercise. It is easier to accept all kinds of drinks or liquid foods after exercise, and at the same time, it can replenish water. If you haven't eaten dinner for two hours after exercise, you can eat solid food to supplement sugar and protein. Avoid drinking caffeinated drinks such as coffee, soda and tea after exercise. Because caffeine also has diuretic effect, it will make the body's water supplement insufficient. Although soda water can also provide water and sugar, it is not a suitable post-exercise drink.