There's another category besides insane and unethical, both of which I take to mean activities which would be bad for anybody.

What about individual overload? The challenge of developing a program like a boot camp is having some idea of what challenges will be useful rather than damaging, in a context where people are assumed to be too cautious with themselves.

Is there such a thing as too much for the participants? If so, what methods will the people running the boot camp use to recognize it?