part of it is natural size but regardless it takes a lot of work. My body is not a type that could ever get that type of mass without steroids, at least I don't think I could. I just have a naturally lean frame and body, but Max has always been a thicker type of body. I think he could get that size without steroids. That said I have no way of knowing if he's on them or not but I don't think he looks all that unnatural in that picture. I think he could get to that without roids.