Editing Mir (section)

===Sleeping in space===
{{main|Sleep in space}}
[[File:Mir Crew Quarter.jpg|thumb|right|Cosmonaut [[Yury Usachov]] in his ''Kayutka'']]
The station provided two permanent crew quarters, the ''Kayutkas'', phonebox-sized booths set towards the rear of the core module, each featuring a tethered sleeping bag, a fold-out desk, a porthole, and storage for personal effects. Visiting crews had no allocated sleep module, instead attaching a sleeping bag to an available space on a wall; US astronauts installed themselves within ''[[Spektr]]'' until a collision with a [[Progress (spacecraft)|Progress spacecraft]] caused the depressurisation of that module.<ref name="SSSM"/> It was important that crew accommodations be well ventilated; otherwise, astronauts could wake up oxygen-deprived and gasping for air, because a bubble of their own exhaled carbon dioxide had formed around their heads.<ref name="ESALife">{{cite web|url=http://www.esa.int/esaHS/ESAH1V0VMOC_astronauts_0.html|publisher=ESA|access-date=28 October 2009|date=19 July 2004|title=Daily life|archive-date=13 February 2010|archive-url=https://web.archive.org/web/20100213144154/http://www.esa.int/esaHS/ESAH1V0VMOC_astronauts_0.html|url-status=live}}</ref>