I think one of the most wonderful things about our cocks is how they get hard while we sleep. If I wake up its as hard a a rock. If I go back to sleep it get hard as it can be all over again. If I get up and go to the bathroom as soon as I am on my feet my big boner is gone. As soon as I go back to sleep its big and hard all over again. To me its a mystery how all this takes place, Do any of you guys have any comment on how this keeps our penises healthy? To me it is a mystery.