toughening ribs

Yeah, alot do. The problem is that alot of teenagers see RJJ or Calzaghe training like that and think "Wow! What a great idea! THAT'S how I'll absorb bodyshots!" and tell their friend to hit them in the side as hard as they can with a medicine ball, fist, hammer, or God knows what else.

"Getting tough" is pointless if you're really just getting hurt.

 

Gain heaps of weight, then your ribs will be protected by layers of fat!

 

Harden the **** up.

 

Nothing you can do except for taking it like a man.