This is similar to rock climbing and skiing. The commonality that I see is that they all require taking what comes at you, a random natural environment, and han

This is similar to rock climbing and skiing. The commonality that I see is that they all require taking what comes at you, a random natural environment, and handling it as well as you can. They require an outward focus and quick adaptability to varying conditions, which is not so much the case for other sports like road cycling, running, and anything on an artificial surface.