People are always saying the only workouts you regret are the ones you didn’t do. I’m here to say that is false. I mean usually it makes sense: the endorphin rush and feeling of accomplishment you get at the end of a workout put you in a better mood than when you started. But what if your body was telling you not to do it? A few months ago I went to one of my favorite classes and left feeling broken. I’d considered canceling the day before after a pretty intense physical therapy appointment (and a night of drinking and karaoke), but opted to go anyway—I figured I was just making excuses. But during the ride, my body rebelled.