One Mind.

Confrontation has less to do with the body, more to do with the mind. Naturally mind and body are interconnected, interdependent, and in Zen it is found that the mind can be trained by bringing focus to the body or bodily functions (as well as those in the mind when being mindful of thinking and feeling).
So the first statement of this post is only partially true, but holds true never the less.

Shinzen Sensei posted on facebook about not thinking during confrontation, a little something that people in this particular circle call 'Mushin,' often referred to as 'No Mind,' something I like to call Ichi-Shin, or one mind (probably not the proper Japanese for that one, but oh well, you get the point).
It is not about having no-mind, it is about having a clear mind sharpened to one point, and is not separated from anything, but is an active participant on both ends of the spectrum.
It can appear to be supernatural if it is understood and applied correctly, and one cannot just understand this from a superficial level, it must be developed, cultivated, and actively utilized.

It is not about not thinking, it is, however, a different kind of thinking, a less complicated kind of thinking that does not include words, concepts, or sequential/linear types of thought to which we have become conditioned and accustomed.
Living in the moment we are not thinking about past or future, there is a goal, but the goal does not take center stage during the doing, because the doing, or the process, is the most important thing - the same thing as enjoying the journey without worrying about what lay at the end.
There is no separation of process and the one doing the process, at the same time, there is no separation between assailant and assailed, at the same time there is a HUGE difference, but in that moment none of this matters, only the moment, the process of which you are actively processing.

These are huge words that hold no meaning once the real thing is experienced and everyone will have their own way of explaining and imparting to others when the time comes to do so.
Words point the way, they are not the end all, but there again, the process is the most important thing. Become the process. Become the predator. Kime.