Taking human anatomy into account, the toilet facilities on spacestation have an architecture that expertly aligns the purpose to theenvironment (such trifles as a toilet seat are not needed when you areweightless). The Soyuz spacecraft is a different matter. The toilet onSoyuz is simple, and will get the job done with minimum mess. Butrelaxing it is not. In the cramped quarters your crewmates politely keeptheir backs turned, with plugged noses. Fortunately, we only live inthe Soyuz for two days before we rendezvous and dock with the spacestation. After that we can live, and relieve ourselves, in semi-privatestyle.
The Olympian measure of endurance for a Soyuz crewmember is to holdyour bowel for the two-day passage. This is a competition with no placefor silver or bronze. Shortly after the hatch opening and the firsthandshake/hug with our friends already on the station, the newlyarriving crew makes a hasty retreat to the toilet. Exercising properspace etiquette, it is best not to give the newly arrived too strong ahug.
To help ease our difficulty, we are offered a pre-launch enema.Administered by our flight surgeons, this allows us to launch with aclear mind and a clean colon.