What does being "overloaded" have to do with the fact that no one is pushing, pulling, or hitting you? Going through a series of moves has none of the outside factors of a fight. You're missing the point... I wasn't talking about a specific kata and I only used those techniques as an example. The point is that if one single thing differs, then any series of movements from a kata isn't going to plan. In a fight anything can happen so why train like the opponent will react a certain way? Everyone reacts differently. Btw, I'm not just talking about karate here. I'm talking about martial arts in general, but I use 'kata' because it seems to be the most common term. Kata by yourself is different from "kata based sparring". I don't think drilling movements from katas is a justification of kata itself. You can drill or spar with specific techniques without practicing them in order by yourself. I've never said they make you worse, only that there are other ways to make you better. Congrats by the way. I didn't say if you had one you would lose. It can actually help you with certain things (withstanding pain etc.). I just think that, as well as overcoming fear and lack of aggression, is one of the main 'mental' challenges someone faces in a fight.