Answered Aug 21
OK, here’s how it works.
First, it’s only a problem for the male astronauts. Research based on males between the ages of 13 and 25 shows that, a lack of sex causes a medically dangerous buildup of pressurised semen in the testicles.
So, on the space station, they have a periodic health and safety routine to alleviate this.
Basically, they open the door, and allow all the air to escape, so the entire station depressurises. The vacuum of space then pulls all of the accumulated semen from the astronauts, in one big spooge, thus relieving their painful internal pressure. Then, they close the door and fill the station with air again.
They do this about every three or four months or so.
There have been long-standing but never confirmed rumours that the old Soviet space program’s Mir station didn’t have this procedure, and that a crew member suffered a fatal explosion due to the chronic lack of sexual release.
It’s amazing what you can learn when you ask questions of random strangers on Quora, isn’t it?