I'm practicing for when Fighting is Magic comes out and I bought a pair of Sega Saturn USB game pads which, the Internet says, are the best ones for fighting games. They're pretty good alright, but my left thumb starts to hurt soon from doing quarter and half circles. What's wrong and how do I deal with this?
I had the same problem with original NES and SNES controllers (Sabin's Bum Rush requires a full circle... although there's a really easy way of doing it that I kick myself for not knowing at the time, but I digress...). I'm pretty sure I've permanently damaged the fleshy pad on my left thumb from this kind of thing.
There's a few things that can help here: