Cycling and Running
I like cycling, hiking and climbing rather than running but I read an article that makes me think that cycling and running are incompatible. In one sport the leg becomes a spring and as you run it becomes fine tuned to reflect the energy back into forward motion whereas in cycling torque is key.
Why Do Cyclists Have Bigger Legs explores the physiological difference between running and cycling. Specifically a runner wants muscles that are springy and provice forward motion whereas as cyclist wants to provide torque and downwards force to propel the bike forwards.