I would say a combination of walk the plank, some great butt workouts would help firm you up
But this is taking things to another level I mean getting ripped muscles like this with 5% bodyfat is pretty dangerous as well. It may look insane but its also pretty dangerous.
The body needs some fat and this is tooo much!
Anyway I think it shows how perfect the body is and now – he better get back to reality and enjoy the turkey cos it the holiday season!!
Ho Ho Ho!!
Peace and love.