Sleep is a critical health behavior and one that is typically shared between husbands and wives or romantic partners. Until recently, however, sleep research has largely neglected to consider the social context of adult sleep. By the same token, researchers who have studied the impact of social relationships on health behaviors and outcomes, have largely neglected to consider the night, including how social factors influence nocturnal physiology and sleep. This presentation will highlight Dr. Troxel’s work that examines how social environments, from our most intimate social connections, to the neighborhoods in which we live, and even to public policy, influences how we sleep. This collection of work will demonstrate how sleep may play a critical role in explaining how social environments get under the skin to impact health and functioning.