> That surprises me, I would assume that getting an erection on demand > requires some skill -- but maybe not for the 20 to 30 crowd.
I don't think that is true. The main factors that seem to be involved in this are: - age - individual anatomic structure - nutrition - lifestyle/conditioning - arousal by external stimuli - mental state - ability to concentrate/focus - absence/presence and frequency of cigarette smoking It could be said to be a "skill" only in that a man aimed to "train" himself in this regard by seeking to optimise the above factors. I vaguely recall reading once about a guy who could do it, but he himself said it was just a "natural response" and in fact he could not explain how he did it. Thus, it was not a "skill" but an ability. Jurriaan
