I semi agree with pewep. It is possible to achieve a body like that thru HARD HARD work, and then once you get there it's just as HARD to maintain. I personally know guys like this, and it's serious dedication. Almost full time job. Meal planning all the time, almost no eating out, work out several hours every day, etc... Of course, there are some people with great genetics who are an exception, but for an average joe, it's not easy.
That is why many people take shortcuts and "supplement"