bun,
>What makes a hard girth gainer? If it is the tunica that is the limiting factor for girth gains, does this mean that people who have a hard time gaining girth have a tougher, stronger tunica?<
Yes, the strength of the limiting factors will vary from person to person. If a person has a hard time gaining girth it might also be a case of poor exercise technique, or lack of consistancy (among other things).
>If that is that case would the solution for these people be to use very high intensity girth workouts?<
As stated above, other factors come into play. It would be better to experiment with different techniques, to work on the actual technique, and to optimise rest days before going balls to the wall.
> It would make sense for a tougher tunica to require more stress than a weaker one.<
Yes. Or more time.
>Would it be possible for someone to start out with a very low intensity girth routine, slowly increase intensity, never gain, and end up overtraining?<
I dont think so, I think overtraining could be defined as ‘doing more work than is necessary to gain, leading to injury’. It is possible to do more than is needed to gain and not overtrain. Maybe not in terms of intensity, but in terms of time I think this is true. If you slowly increase intensity, you will have a good feel for what the workout is doing for you, and you will know if you need more or less. Eventually you will gain, or notice signs such as a better temporary girth, soreness in the tunica etc. These will indicate that you are approaching the needed stress levels, or already there.
>Could there be other limiting factors besides the tunica?<
Circulation is probably a big cause of non gaining, the blood flow must be improved. Of course, girth exercises will tend to do that by default, but I think BTB jelqing is #1 for this.
> Does everybody who starts off slow and gradually increases intensity gain girth? If not, why?<
No. They might not be consistant, missing workouts and such. They might have very poor circulation, or the time of their sessions, or rest day frequency may not be optimal. If all this is not an issue, yes they would gain when they reached the required intensity.
SS4