Do you have any weird riding habits?
I'm a little OCD about certain things. Nothing that would actually benefit me, just weird stuff. One of those things is I don't like to cross my path. By that I mean I don't like going back over a path I've already crossed. Think of the vintage Tron cycle game. I do this with both cycling and when I run. I intentionally plan my routes so that I never cross back over where I've already been. The only exception to this quirky rule I have is when I do some sort of interval. There's a place here that's arrow straight and mostly flat for three solid miles. I will often do sprints on this section where I'll ride loops, one direction sprinting, back the other direction in recovery, then sprint, recover, and so on. But that's the only exception.
No idea why it bothers me to do this but I avoid crossing my path like the plague.