Once or twice: once when I injured myself and once when I had a lengthy illness. Other than that I have continued to practice p.e. at least on a maintenance level, and then I go through periods, (usually weeks to months), when I practice a heavy duty routine. Right now I am focusing on my VacuTech pump and then just resting on off days. It seems when I get more sleep and rest, I get better EQ's. For example this morning I awoke with a 10" boner. I usually have to edge to get to that point and beyond.