Want to vomit after exercise may be the result of a large amount of exercise, low blood sugar, low blood pressure, insufficient blood supply to the heart and other reasons. 1. Exercise: usually lack of exercise, suddenly do strenuous exercise involves gastrointestinal spasms, a moment can not adapt to lead to nausea, want to vomit. 2. Hypoglycemia: exercise consumes a lot of calories, when the blood glucose concentration in the blood is low, vomiting, cold sweat, fatigue, dizziness and other symptoms. 3. Low blood pressure: people with low blood pressure can experience dizziness, nausea and vomiting after doing exercise. 4. Insufficient blood supply to the heart: the existence of coronary heart disease, insufficient blood supply to the heart after exercise nausea, vomiting and other symptoms. If self-regulation can not be relieved, it is recommended to consult a doctor in a timely manner to identify the cause of the disease and follow the doctor’s instructions for treatment.