I’m going to disagree with the above answers.
The thing about vomiting during a training session or boot camp, is that it could be from a number of factors.
We know that our clients are not always honest with us about their food intake and other things they do when we don’t see them. Because of that, it is possible that a hard training session could lead to vomit because of their other actions.
I come from a military background where it is acceptable to vomit and keep going. In a sense, you’ve removed the toxic stuff from your system. I am a hard trainer and my boot camps are not designed for the faint of heart. If you vomit, that’s fine, but keep going. I’ll make sure you know how to prevent dehydration and boost electrolytes, but it’s a lesson that a client may need to learn the hard way.
If that’s not the kind of trainer you are, then that’s fine, but we all train differently so there is no one right answer to this question.