There's no way he's anywhere near Heath. that's idiotic. in fact, his muscle is definitely achievable naturally. Sure, it'll take years of hard work but I think a lot of people on this site must not ever work out because they declare that anyone as "big" as Brad Pitt must be on roids.
Jeez, it's gotten to the point that a swimmer's physique is now a getbig steroid abuser.
This is attainable naturally with years of hard work (and yes, genetics).
Note: i don't know that HE is natural, but he certainly could be.