The sound of your spine snapping
I have to say, that in boot camp, you get worked harder than you ever have before in your life.
We WERE fatbodies going in. we would be exercised until we fell down, carrying huge weights for miles compared to our prior lives, 'cycled' (exercised for hours as punishment) but one thing that NEVER happened.
No one threw up.
The reason is because we were CYCLED. no single exercise was overdone. [W]e might do pushups for fifteen minutes straight and then made to wait 'halfway up' for fife [sic] minutes, but then we were doing 5 point bodybuilders, and then from there into situps. Each exercise was DISTINCTLY seperate [sic], because that way we could get a continuous long workout without destroying our bodies.
It trained our endurance while building our strength.
From what I understand of [CrossFit], it attempts to build endurance AND strength 'in the same exercises'. This is wrong, it is dangerous, and it can be absolutely deadly. There is no rest down-time from one set of abused muscles to the next. You abuse the same muscles, again and again... this destroys muscles rather than building them and increasing endurance.