Most people are capable of running the marathon after some training but most don’t. The fact, that, theoretically, it is possible to loose weight by conscious

Most people are capable of running the marathon after some training but most don’t. The fact, that, theoretically, it is possible to loose weight by conscious choice (I have), does not mean it is reasonable to expect everyone to do it. I know very well how hard it is. Thus, “it is possible” and “you should have done it” are not equivalent statements