I have a couple of muscle groups that I consider to be 'falling behind', or that I simply want to get bigger as quickly as possible regardless of sacrifices I have to make to training other areas.
The best example of this for me is probably my shoulders, which are what I would consider to be out of proportion to my biceps and especially triceps now.
What is the correct way to hit one or two muscle groups that you want to 'catch up' or simply want to have larger as quickly as possible?
I'm not sure whether the right way to do this is to try and get an extra few hours sleep on shoulders day, try force myself to eat more that day, reduce reps and try up my weights, do more reps, throw in an extra workout on that day, work the group an extra one or two times during the week and remove another muscle group, etc. For all I know it means only working on that group only once per week on its own day at a really high intensity (like 5 workouts, 4 sets to failure).