I know; that sounds quite strange, but I couldn't think of a more fitting title. Anyway, I'm in very good physical shape, and what I'm about to describe is probably enhanced by that fact. I've found that when I'm about to cum, if I flex my abdominal muscles as hard as I can, I have an immensely powerful orgasm in which the contractions take place throughout my stomach as well as in my groin. It's cripplingly powerful, and feels incredibly good. It's as if I'm having an orgasm throughout my entire body. I've gotten into the practice of doing this every time I cum now, because it feels so much better than a regular orgasm. Any other guys have any experience with this? If not, I'd definitely recommend trying it. Again, I do have powerful abdominal muscles, and the magnitude of pleasure is probably enhanced by that, but I'm curious to see if anyone else has experienced this same thing, or if it's just me. I've actually started flexing every muscle in my body when I cum, because it seems to spread the orgasm to that region as well, but the difference is more notable with the abdominals than everywhere else combined.