The intensity is too high. If the intensity of the training or competition is much more than you can bear, your body will not adapt to it. If the intensity can not be reduced in time, it will lead to nausea and even vomiting. In this regard, the runner should train step by step, strictly arrange the plan to carry out, cant be in a hurry to achieve.
Incorrect nutrition intake. Eating too much or too little before running may lead to nausea or vomiting during or after running, which is caused by the incorrect diet. Runners should make diet plan in advance and arrange diet reasonably.
Over replenishment of water. Some runners are afraid of running without water. If they drink a lot of water before or during running, they may lead to hyponatremia. Nausea or vomiting is the precursor of this symptom. The principle of replenishing water is as long as you dont feel thirsty. In addition, you should pay attention to replenishing electrolyte to prevent electrolyte imbalance.
The temperature is too hot. Especially in the hot and humid weather running, the temperature will rise more, beyond the reasonable range, will also lead to nausea or vomiting. In this case, the runner needs to cool down in time or stop running temporarily.