A very good question... philosophical almost...

I wouldn't do it if it wasn't fun... but how do I explain to someone that having muscles hurt for 2 days, or pushing myself to the point of wanting to throw up and just get it over with, is fun....

Well, it seems kind've contradictory... when is fun no longer fun, and when does it turn back into fun again???

Thats too tough-a-question for me to find an answer to!