Are the two interchangeable/ married forever intertwined, etc?
My friend Wilson once told me that at the running camps in Kenya he went to, guys would begin the camp running 3 times a day. Hard, easy and very hard and then do it all over again. Day in and day out. Eventually, guys started to abandon the ship and retreat to the forest and simply say "no mas" running is not for me. The scenario is sort of like a survival of the fittest thing.
Wilson, like many, survived. As he would and always does say to me "Max, running is no joke. Sometimes you will feel like dying and so, be thankful that the run is done and you can run another day"