How is giddy vomiting after violent exercise to return a responsibility

It may be that the amount of exercise is relatively large, resulting in insufficient blood supply to the brain, causing dizziness and nausea symptoms. Secondly, it may also be due to insufficient blood supply to the gastrointestinal tract. After gastrointestinal function is weakened, after exercise, it will cause stomach discomfort. Generally, most of them can be relieved after rest, and later pay attention to moderate exercise.