Conditioning shins to a high degree can make them unfazed to impacts that would normally cause significant pain or difficulty walking.

“his shins were so badly conditioned meaning so well conditioned for the concept of the sport that you could hit them with not all out but you could take a baseball bat and somewhat like just gently not gently but like with medium force whack his shins and he was unfazed at a level where even if you roll a baseball bat across a normal person's shin at the wrong angle it's very sensitive”