In this context, inemuri can be seen as a subordinate involvement which can be indulged in as long as it does not disturb the social situation at hand – similar to daydreaming. Even though the sleeper might be mentally ‘away’, they have to be able to return to the social situation at hand when active contribution is required. They also have to maintain the impression of fitting in with the dominant involvement by means of body posture, body language, dress code and the like.