Here's one I've wondered about for a while - does anybody use a bike for training that is heavier, or has more rolling resistance, to build up certain kinds of strength or endurance?
OK, you may ask, why do this?
I can think of at least one reason: I live in a dense urban area (NYC - Brooklyn). Where I ride is often full of joggers and other recreational cyclists, so I push myself less because it's just not safe to go super fast near so many other people. I was thinking of getting a touring bike (instead of my road bike) because at the same power output, I'd be going slower and therefore be a bit safer.
Thoughts? Is this utter madness? Should I do it anyway?