Well, I'm pretty competitive, which is one of the reasons why I ride -- if there's a sprint for beer at the 120 km point of a ride, I'm in there [last wheel pays], if there's an attack on a 15% grade climb, I'll grind like hell until my eyes are popping out of my head to keep from getting dropped [I'm not a great climber]. The spinning classes I've been taking are run by competitive cyclists [the guy who runs them overall was on the 1992 Canadian Olympic team and was a top national racer] and attended by a diverse group that includes a good number of racers. I don't race, but I like a challenge, so I try to match the racers stroke for stroke. I care about keeping up -- and being seen to keep up -- it's part of the fun.