Can you say Prostrate issues?
This is one serious limitation I see to the BMBH hammock versus top/side loading hammocks, at least for us guys. The only hammock I have that has "issues" with late night calls is my Hennessy. All the others make late night 'watering' very easy; just roll and aim.
Still, I don't think you'll 'go' anymore than normal when you start with a source of warm down there.