Unfortunately, exercise-induced nausea is a real thing—here's why (and how to deal). In this age of tough bootcamp workouts and high-intensity interval training, feeling like you want to vomit has become an increasingly common aspect of a serious sweat session. If you ever (or often) find yourself dealing with queasiness as the result of a challenging workout, know this: You're not alone; exercise-induced nausea is a real thing—and it can really get in the way of the post-sweat pride you should be feeling.