Analyses of particular instances of co-present interaction have revealed the regular occurrence of embodied actions in face-to-face encounters. Their recurrence suggests a friendly amendment to an expanding description of the turn-taking system such that a fifth domain of turn-construction unit types be added to the existing spoken domains of words, phrases, clauses, and sentences. The problem of what constitutes a turn-constructional unit has been dealt with in linguistic terms based on grammatical units (Lerner 1991; Sacks, Schegloff, and Jefferson 1974). But embodied action-units embedded in unfolding lines of activity may or may not include spoken grammatical components, and yet still exhibit order within the rubrics of turn-taking. Recall in the instance SLEEP from Chapter One the unproblematic nature of Alice's overlapped nonvocalized turn with Mary's turn.