Nausea and vomiting after exercise, mostly due to the following reasons: First, the usual lack of exercise, suddenly a certain intensity of exercise, it will lead to nausea and vomiting feelings. Second, the exercise is too strenuous, too much exercise, resulting in a short period of insufficient oxygen supply, triggering nausea, vomiting. Third, environmental stimuli and personal body is not in a normal state, may also lead to, such as the outside air is too cold, resulting in the inhalation of too much cold air, itself has a digestive system diseases may induce nausea after strenuous exercise. Fourth, just eaten immediately after exercise, bad habits may also trigger nausea. Fifth, if suffering from hypoglycemia, dizziness, nausea, vomiting is normal after intense exercise, it is recommended to develop good exercise habits and avoid exercise in the above-mentioned circumstances.