You gotta ask ???
Dude !!!

I had a shito ryu instructor once, the guy had this gut on him, it was like a freaking cement block !!!
I have never seen anything like it, full force shots and nothing.
I think he has a steel plate inserted in his gut.
I have never seen a "ripped six pack" tak shots like that, BUT I have seen "guys with guts" take some serious **** to their bellies.