@MrBrady The flat Theraband style sounds like a workable idea. I have been thinking maybe the smooth motion of a machine could be replicated with bands, kind of like how bowflex seems to, and I was wondering if the smooth constant tension would boost muscle growth a little more in the neck. Maybe it would make no difference, but it would be an interesting experiment. And speaking of experiments, this is one of the things I like best about working out. For me, a work out room is like a lab where you get to experiment with various methods and see the results in your development.
Right now I'm experimenting with whey protein. I saw some research where guys 60 - 80, if my memory serves me on the ages, took 40 grams of whey protein right after their workouts and got much better gains than the control groups. The whey protein users put on more lean muscle and lost body fat. The results of another research claimed whey protein boosted testosterone (That sounds a bit hard to believe for me, but if it's true so much the better).
I've been doing the 40 grams after workouts three months, and taking 20 grams on non-workout days. My gains feel like they were when I was a young guy. I'm also getting a better pump in my exercises. Of course, all that may be a placebo effect, but for whatever reasons it appears to be working. My wife even said my neck looked larger, which is like a religious miracle because for me the neck is an extremely stubborn area to build up, and unlike her I don't see a noticeable change. I'm still looking for the elusive wrestler's neck, lol.
Some say you don't need protein supplements, and they may be right. An example they give is "look at those bulked up guys in prisons who don't have access to special diets yet get hugely muscled." Of course, those bulked up guys may have contraband steroids to help their muscles along. Maybe not.
I don't know who is right on that argument, but I believe as a guy ages a little extra protein goes a long way particularly if he doesn't eat red meat much. I could be mistaken on that, and maybe none of the nutrition experts have the definitive answer at this time.