One of the most quoted routines of the late George Carlin was his explication of the differences between football and baseball. “Football has hitting, clipping, spearing, piling on, personal fouls, late hitting, and unnecessary roughness. Baseball has the sacrifice.” I always think about that routine when each sport is beginning to stretch its legs to prepare for the start of a new season. Baseball’s spring training is all about the smell of freshly cut grass, about renewal, about being eternally young, about hope. Football’s training camp is about fighting for your right to exist, about weeding out the weak, about grueling two-a-days, about a boot camp where you’re expected to run until you puke and then get back up and run some more. It is about destroying yourself in order to live.