Delts...I couldn't train them directly for three months earlier this year after I slipped on some black ice at the train station and came down on my right shoulder...if I hadn't been wearing a backpack that took some of the hit, I'd probably have dislocated it. Moral of the story is that in the northeast in the winter, you should pay attention to what you're doing and not be thinking about how much you wanna nail the chick who was sitting next to you for the last hour. Of course, sometimes, you just can't help that...
Also abs, I guess, not sure since I can't see them...YET...