2. Vomiting
Naturally, when you are nauseous, you will feel as if you want to throw up. As nausea becomes more intense, you will eventually end up vomiting. Why? – Because your body is reacting to the bacterium that has infected it, and in the case of food poisoning, that bacterium lies in your gut.
In an attempt to drive it out, your body will attempt to purge itself, which means you will end up vomiting. The vomiting can become intense and all-encompassing. Make sure you stay hydrated, as your body will lose valuable electrolytes.