If I move my pawn to e4 instead of e3, it absolutely affects my performance. How about blitz? Everything we do has some basis in physical performance, hence why I think your definition of a sport if lacking. If a sport requires physical exertion, ping pong is out also.
http://www.youtube.com/watch?v=lrp-FT51zPE
How can you compare this to moving a piece and hitting a clock once every few minutes?
"Geek Chics" are not actually incredibly nerdy.
Thats my point!
So take something like the big geek glasses... geek chic now... used to be incredibly nerdy