Showering and dressing nicely motivates me to go to class. That aside, it depends on if I have to, if I'm challenge in class, and if the subject interests me. If I don't have a good reason to go to class, I won't go. I've hardly go to class at all being in England since half of my teachers put all of their lecture notes online and don't teach beyond what is on those notes in class - what's the point of going if they're not going to do anything more than read aloud for me? It makes me feel a bit guilty, but I've still been getting all A's on my work, so I guess there's a method to this.