I have a condition that enables me to gain muscle very quickly and easily. You might think this sounds great, but it's actually a real pain. If I do anything repetitive for too long or too often the muscles I use for that task noticeably grow. My main concern is my forearm strength due to masturbation. I have tried switching hands between sessions but both forearms are huge already and I bear a close resemblance to Popeye. How can I continue to masturbate without using my arms?