The quote reflects a unique perspective on the experience of stomach-sleepers, suggesting that this sleeping position is linked to a tendency to retreat from everyday life. Such individuals might grapple with darker thoughts or perceptions, which could lead them toward introspection and a deeper engagement with meditative practices.

In the context of Jeffrey Eugenides' novel "Middlesex," this insight may resonate with the themes of identity and personal exploration. The protagonist's journey might mirror this retreat from reality, exploring not only their own complexities but also broader societal narratives, ultimately delving into what it means to find one's place in the world.