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Old 08-23-2004, 09:08 PM
Ruken Ruken is offline
Charter Member
Join Date: May 2003
Location: DC
Posts: 5,862
We still don't have an answer

Unless I've missed something, all we seem to have cites for is that erections are a normal part or REM sleep. Do we know why this is the case? What is it about REM sleep that causes an erection? Colibri has an idea, but I just spent some time with a search engine and I can't find any more informative cites.