Yeah, that's the heavyweights for sure. One of the reasons I think so many of us like to watch them fight.
I was just reading about how Stallone just about got himself killed by Lundgren filming Rocky IV. I had never heard this. He was in the hospital for 4 days after getting punched.
https://www.foxnews.com/entertainment/dolph-lundgren-sylvester-stallone-rocky-iv-hospital
"While filming the classic boxing flick, Stallone almost brought upon his own demise.
“He hit me so hard he almost stopped my heart,” he said. “I told him, ‘Why don’t we just do it? Just try to knock me out. Really cut loose as hard as you can.’ That was a really stupid thing to say. Next thing I know, I’m on a low-altitude plane to the emergency room, and I’m in intensive care for four days. And there are all these nuns around.”"
I didn't know Lundgren was a professional martial artist. Most people outside of boxing/fighting pro just don't understand how hard they can hit. I guess pros can take shots like that because they usually see it coming and roll with the punch enough to take some force out of the blow? Its not like if you are highly trained it makes your skull thicker!