There are a few areas that I believe are typically relegated as "stubborn" by most trainers. So instead of trying the latest routines touted to make em pop, I just stopped counting sets, tried to apply a basic approach of fiber type training (i.e.- higher reps for the muscle groups primarily comprised of more "endurance" type fibers) and gave myself a time constraint.
These included calves, traps and forearms. Not to say that I really did anything earth shattering, I just accepted that I was going to apply a good amount of volume, so I didn't count sets, and instead focused on resting (stretching or massaging) enough between each set so that I felt that they were as focused and productive as I could make them.
Certainly not magic, but worth a try