This is great! Johan, like you, I did 3 months of jelquing, with little or no results. So I ordered a bib hanger in July and started hanging. In 3 weeks of hanging, I gained 1/4” length. I tried your AI stretches, and I get the same feeling in my ligs that I get hanging! Really good theory, nice investigative work Johan, and thanks for sharing it!! I’m going to add your AI stretches to my routine, in the mornings, and hang at night. Thanks again, and best of luck to you!
P.S. In my experimenting, I’ve found that doing a reverse kegel (flexing abs like I’m trying to pee really hard), increases the intensity of the stretch - it that what you meant by pulling in abs? If not, give the reverse kegel a try and let me know what you think please).