Do roids improve chin/punch resistance?

NO.
Anabolic steroids are associated with muscle function.
And not only in terms of muscle mass, because cyclists also take steroids.

chin/punch resistance has to do with the brain, and the tissues between the brain and the skull.

By the way, how many steroids do you think Oliver McCall took?
P.S. and everyone accuses Holyfield of taking steroids (and he did).

 

Yep Canelo is a prime example of this.

 

Look at Amir Khan .
He was known as a very chinny fighter but then suddenly could take lots of big shots off Brook at the end of his career when his punch resistance should have been at its lowest.
Then funnily enough he fails a test...

 

It's not boxing, but in the UFC, Alistair Overeem had an incredible chin, but after his dopes bust, he became a glass jaw.

 

He's got great head movement but with an ox neck that when a shot slips through he can take it more or less. Wrestlers work hard to build up strong necks as well, pretty sure neck bridges started in wrestling and then was adopted by boxers. Wrestlers have been known to dabble in the special sauces.

 

Depends on the PED, not all PED's are steroids. Steroids themselves probably have no impact on punch resistance as more muscles and strength has no protective advantage when it comes to brain trauma and this is what a KO is, brain trauma. We say a fighter has a good or bad chin but that's misleading it has nothing to do with the chin and everything to do with the brain and the CNS.

Something like EPO though might. It's been shown to have neuro protective benefits after brain trauma. EPO is all about oxygen delivery which is why it's used by endurance athletes and what do we give someone when they are knocked out, yep oxygen. Now this might not mean it will improve a fighters durability to take a punch, but maybe it will help fighters recovery from being dropped and hurt.

 

I've never witnessed a fighter come out the next round as "fresh" as he did. Pryor gassed out the previous round only to to become SuperMan.

I think we all need that black bottle. lol

 

That's not totally correct when looking at boxing specifically. We are talking about "punch resistance", why do boxers spend so much time training and building up their necks? Just for the looks of it? No, it's so their head doesn't fly off when they take a shot. Look at someone like Canelo and how you can see his neck muscles litterally tense up when absorbing a shot.

It's believed the knockout/blackout itself happens when the brainstem specifically is impacted and anything that can better brace the head/brain like a well developed neck/trapezius helps. No, it won't prevent all shots from KOing someone especially a straight clean shot but it will help the resistance.