Running is not masochism, but it might seem that way. Running does not come naturally to most people that I know. Even the once-serious college and high school athletes I rub shoulders on a daily basis with don’t like to run. Maybe it’s because running was punishment in practice, or maybe it’s because the determined athlete in them will only stop once vomiting occurs. No matter the contextual reason it really boils down to one simple and unsophisticated truth: running is hard.