I dunno, all I know is that twins weird me out big time. When I see twins together it makes me uncomfortable. I "dated" a girl in middle school, and when I found out she had a twin, I stopped seeing her. 😐
I think he gained his weight back for a role, because he's one of those actors that changes their body for the part.
I find fat Jonah funnier, but also I wish him the best health-wise.