Nope its something like a little dislocation or maybe "tendinitis" I don't know how it's called in english...
Man I started playing CW but I played like 6 or 7 hours all day playing only 3 or 4 pauses between, I think that If I still play that game I'm gonna lose my life so I just stopped ( I played with 2 argentinian guys and then 2 more colombians and later a spanish guy joined our parties haha ) It is too vicious omg