Clickclock answered too: eg STDs My friends and I also agreed that : we felt generally weaker easier down with sickness also, I felt uncomfy down there (in my balls) after  I visited sauna... It s not due to "over bang" cos it is not always about penetrative sex When I m bz at work/projects, where I forgo weeks of sauna visits, I don't feel anything wrong down there   and though none of us did raw , but we do accepted blowing by others While I m cut, I made myself c