Angela:
I don't really know. Why don't you ask Cathe?
I'm like you, an ecto with a gaining problem. But, I have to say that the PUB has changed my upper body. I was already getting strong in the back and biceps from MIS mainly, but PUB has taken my strength to new limits. Not only the initial pump as you complete the set, but noticeable curves and shape in the upper body everywwhere since starting using PUB. I can complete the back and bicep section with the same weights Cathe uses, although I sometimes have to slow down the count on that 15 pounder set, and no-one was more astounded by this than me!!
This tape has really helped me with triceps too, I never had any before. But this combination of exercises seems to work for me.
All in all, I lift heavier with this tape than witth any other, and my body now looks so much more balanced, no longer reed-thin arms up top.
try it and get ready for the sleeveless season!
Clare