I would rather call it effective than brutal. The intent is not to kill oneself with the exercise, but to do "just enough" and let the body tell you how much fu

I would rather call it effective than brutal. The intent is not to kill oneself with the exercise, but to do "just enough" and let the body tell you how much further you can go. Kettlebells are quite nice in that way - they strain you enough, and if it get's too heavy you quite quickly realize a lesser weight is the better option.