I have been experimenting with coming to the edge of an orgasm and then backing off. I find that I have more energy. Perhaps it also relaxes some anxiety over losing erectile fundtion. I had my prostate removed 2 years ago, and suffered from some temporary E. D. I also take an SSRI to treat depression. The side effect is finding orgasm difficult, so i have become more confident in edgeing. I guess all of us have particular issues, and mine may be more particular than others.