I've never had any real shoulder problems before, and I train using a westside-inspired format (ME,RE,&DE days). Today, after a dynamic warm-up and some light footwork drills, I grabbed a set of 25 lb. DB's to start with to warm-up for a 5RM on DB Incline Press. I brought them down to my chest and I began pressing them up, a pain arose in back/top of my right shoulder (i dont know anything about anatomy so if someone could guess for me what this specifically is, that'd be helpful). I guess it all started this morning though, when I woke up and it was a bit sore for some reason. Which is especially strange since I haven't lifted since Friday afternoon. It hurts when externally rotating it or pressing with in most any plane.