They could also list other optional things like did the fighter shower the morning of the fight, did they order room service at the hotel, do they have HBO on their TV package! It'll be great! A big list of stuff that isn't mandatory to do the job!
It shouldn't be a gold star on their fighter report card. If it ever becomes mandatory then great, but until then it doesn't matter than for fighters trying to disprove a misconception, and fighter trying to accuse their opponent of something without actually saying it.
Sorry for being such a smartass.
Big Hairy American Winning Machine