Do you really need to know other kinds of sleep in order to know if you feel like shit after waking up or if you feel fine?
If they have no frame of reference then it seems like their general contentedness is being measured (or as another commenter indicated, their willingness to gripe.)
alt Hacker News
If they have no frame of reference then it seems like their general contentedness is being measured (or as another commenter indicated, their willingness to gripe.)