May i ask you, in what way do you think people would play to the point where their hands will get injured? you see, the it's very rare to get RSI from mania so that means there is only one possibility, Carpel tunnel, but that's if you played maps way out of your league+playing it constantly, i don't think players would go that far honestly. You should take into account that while you are right about finger technique, but the one i'm referring to when it comes to stamina. Let me ask you this, have you ever tried a Jumpstream marathon map? something like Icyworld charts, or even maps like blue army or we luv lama, well if that's the case yes well imagine that burning feeling increases for a long time to the point where you just can't handle it and end up failing to follow to the map, that's what i'm suffering from, to be unable to continue a map because i lost my stamina, if i had infinite stamina i could have easily played that map with an S or something higher in % it's like a runner in parkour, he knows how to do a backflip and trained on it but after he took a 4 month break he finds it difficult to execute, but he knows how to do it but his legs failed him.