I would partially feel proud that they pushed themselves that hard, as with all the pushing and motivating in the world, if someone doesn’t want to push themselves they will bail, especially true with a one to one situation. I think as personal trainers we should all stop moddy cuddling our clients and actually get them working hard. The fitness industry has become so caught up in protecting the clients and keeping things ‘fun’ and ‘interesting’ that everyone bar few seem to have lost the concept of what exercise is actually about. Clients want resutls, end of story, and most have no idea how to push themselves to get those results, and I mean proper results. If a client feels dizzy or nauseous I’ll keep a close eye but I’ll encourage them to work to whatever capacity they can manage. If they genuinely look like they have gone completely hypo and will take a turn for the worse they I will cease exercise, but that is few and far between. Unless they are diabetic then going hypo suggests an over reliance on carbs for energy and encouraging them to eat more sugar before exercise will not solve this and the body will not suddenly begin to utilise fat after several weeks of exercise. ‘Do no harm’ is a great motto but I also clasify keeping your clients wrapped in cotton wool as doing harm. Just push them, they won’t die, far from it. Push yourself until you vomit, then you’ll find out that it’s not that bad.