lolabuse. More like pushing their limit thus making them even more able bodied. Know what the drill sergeants used to tell us? "Suck it up, private! It builds character."
In my training I started off at running 2 miles in 24 minutes, towards the end it was 2 miles in 19.something minutes. You'll be amazed at what your body can do once you get the "I can't" out of your head. Personally I would have loved to have a commander that pushed us like that. No pain, no f*cking gain tbh.
If you can't handle extreme physical, mental and emotional discomfort, then the military isn't for you. Hell BCT is what helps you get out of your comfort zone so that you'll be somewhat prepared for the real deal.
Discharging her is over the top imo. Those other people need to stop whining.