Some shoulder exercises I do also help the back so I am working the back alittle bit more then you think.[/QUOTE]
I guess. All I'm trying to get at is the best way to spur muscle growth is through direct stimulation. Trying to work specific muscles indirectly just won't work, at all. Does your home gym have some type of pullup bar? If not they are easy to make or install. Pullups and barbell rows are all you really need for a decent back. As for your biceps, the best exercises are any type of curls, no pulling movements such as upright rows, ect. Barbell curls, dumbbell curls, hammer curls, reverse grip curls, ect. If you get a chance, I strongly recommend looking at the sticky. It entails all the best "direct" stimulation exercises for growth. Hope it helps, that's why I made it...