Agreed. This thread confuses me because I get the impression that cycling is the _only_ form of exercise many bicycling enthusiasts are willing to engage in. I can understand if someone is a professional or aspiring professional and wants to train during the "off-season", but for Pete's sake, does it not get boring after three or four hours? It reminds me a lot of long distance runners and the treadmill. Like, what's the problem with doing arm exercises, strength training or HIIT? I have a lot of respect for endurance athletes, but to fixate on a single exercise seems to require a degree of obsessiveness.