1, after a night of digestion and absorption, blood sugar is low, and it is not fat that the body can directly call during exercise. The body needs to use sugar first and then decompose it for energy supply, and the first thing to do is blood sugar. If the blood sugar is too low and the body can't get energy supply in time, it will produce syncope, which will greatly reduce the intensity of exercise, but it will not achieve the purpose of exercise.
2. Avoid running completely on an empty stomach in the morning.
Fasting exercise leads to the increase of free fatty acids in human blood. If the free fatty acids are too high, there will be "poisons" that damage the myocardium, leading to abnormal heart rhythm, exercise hypoglycemia and even sudden death.
But don't eat too much before running in the morning. Eating before running is mainly to promote blood circulation and increase energy for running. Therefore, before running in the morning, you should eat some carbohydrates such as bananas and steamed buns and drink some light salt water. On the one hand, it ensures the adequate supply of blood sugar; On the other hand, the decomposition of sugar can promote the burning of fat; But also can prevent dehydration in the morning run.
Is it better to have breakfast before running or after running in the morning?
There is no clear rule about whether to choose before running or after running, as long as you run half an hour after breakfast or eat breakfast half an hour after running.
Because exercise will not digest after eating, it will eventually lead to stomach pain, gastritis and other symptoms. In addition, eating immediately after running is still in an exciting state, which will also affect the gastrointestinal tract, which will lead to gastrointestinal diseases such as indigestion and chronic gastritis in the long run.
Extended data
Fitness and running are generally best arranged in the morning, followed by around 9 am and 5 pm. Middle-aged people usually exercise in the morning because of work. First of all, they don't conflict with work. Second, running in the morning has fresh air, which is good for the respiratory system. In addition, after sleep, people's physical strength is restored, but physiologically, people still have a certain degree of inhibition.
It is not advisable to run before or after meals. Running after a meal or eating immediately after running will reduce the secretion of gastric acid, affect the digestion of food, and cause stomach problems over time. Generally, it is better to exercise after meals 1 hour. Running exercise before going to bed is not good, and exercise before going to bed will make the cerebral cortex in a state of high excitement, resulting in adverse reactions such as dreaminess or difficulty sleeping.
However, it is not suitable for doing large-scale exercise on an empty stomach in the morning. If the fitness distance is long, you can drink a small glass of sugar water or eat less snacks first.
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