Ridiculous with it in the 2000s. In the old days it was he just heals faster than most and take a beating but he can still die. I remember one where he was sneaking onto a ship or something and was starving so he cannibalize his own arm which didn't make sense. Also another one had a story about how he was in a concentration camp in WW2 and kept get incinerated and coming back. Just tons of dumb shit like that that made the character less interesting.