Hi welcome to HCM I can understand your cocern for your vomiting while rowing in gym . If you are new with it and overdoing it , more than your capacity ,occasionally , you might experience such symtoms . “Physically, the nausea-like symptoms of anxiety are the result of the release of adrenaline. Adrenaline disrupts the stomach because it pulls blood away from the intestine and sends it to the heart, brain and skeletal muscle. Without proper blood flow, the body can’t move food through the digestive system. so vomit like symptoms occur . Moreover, anxiety and stress can also cause muscle tension in the abdomen, leading to tension that may squeeze the stomach and result in vomiting. The most common cause of vomiting and nausea during hard workouts is due to the shutting down of the digestive system as exercise intensity increase. In fact , while working out , we are influenced by animea ,dehydration, low blood sugar levels, low/ high BP overexertion, and, quite possibly, heat exhaustion . Try to remove causes and help increase immunity to lead healthy life . Take lemon juice in a glass of water with a pinch of salt and black pepper thrice a day , is very energetic , good appitiser and alley adverse feeling very fast . Keep hyderation up to the mark . Get checked your BP & Sugar level under control Don t over exert . A regular balanced diet rich in all essential nutrients is required for over all health . Avoid fried , fast foods , tea , cofee , alcohol , smoking , constipation ,dehyderation If you face problem on a frequent basis ,rush to your Doctor .Ultimately a diagnosis by a medical professional is necessary so that the appropriate treatment can be commenced as soon as possible. Hope this helps solves your query .Take care , All the best . Don t hesitate to get back if have any further query