If you want to run in the morning, it is generally recommended to run first and rest for tens of minutes or about 0.5-1 hour before you start eating breakfast. If it is already eaten, immediately go running, this kind of strenuous movement will lead to discomfort. After eating blood is redistributed, the blood in the gastrointestinal tract is relatively more, if this time and exercise, the blood in the limbs and began to increase, this will lead to a state of relative ischemia of the whole body, some may lead to dizziness. In addition, in the process of strenuous exercise, in the case of more contents of the small intestine, it may lead to intestinal torsion, which will induce severe pain, nausea, vomiting and other discomfort. Generally speaking, if you want to run, it is usually done on an empty stomach, but only if there is no fasting and hunger for a long time to avoid hypoglycemia, if there is no such similar situation, it is recommended to eat breakfast after running.