I hate rollerskiing. As much as I try to be a good Nordie, I just can’t get over my fear of hitting the pavement. Between a history of bike racing and the rollerski learning curve, I’ve already lost enough skin. I know it’s good for me and might make me faster on snow, but I’m too old to put up with my heart rate being affected more by fear-induced adrenaline than by quality training. My...