donheff
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
I saw an interesting PBS show on ED that explained how the erectile plumbing functions and how Viagra works. When aroused, arteries that deliver blood to the unit increase their flow and veins that return blood from the unit constrict and blood gets trapped in there causing it to pump up the spongy tissue. For a variety of reasons (psychological or physical) the constriction plumbing can fail. Viagra causes the same sort of venous constriction so, as long as there is a stimulus (to get the blood flowing) the constriction works and the unit inflates. Now the interesting thing about the documentary was the disclosure that smoking dramatically reduces the constriction. In fact it sounds like it is a miracle of over capacity that enables most smokers to function at all. I figured that would be a great point to make to high school boys to scare them off of smoking. The problem is they probably wouldn't believe it until too late - but then they have Viagra so what the hey.