I believe it
Some people just have #TheGift...
Plus he is very lean... that makes you look bigger. And you don't necessarily need to lift heavy to put on mass, any regular overloading will do.
It's not just him though, a lot of boxers are built crazy (
) and the vast majority say they don't lift weights.
Tyson said the same thing back in the day. Maybe it's the volume that does the trick.



and the ass is perfect. 
. Did some captain chair leg raises with 17.5 and used the stretch machine for the legs. Sitting here in the locker room bout to wash my hands and head out.
I told my sisters I won't be doing it again. I was ready to give up 10 min in 
