A height-adjustable desk is disclosed. Exemplary implementations may include a work surface, a left-side support structure, a right-side support structure, a core body, and a working body that provides the work surface. The core body may include lifting mechanisms such that the work surface of the desk may be positioned for a person in a standing and/or sitting position. The working body may include a control interface configured to be manually engaged by the user, to control lifting and/or lowering of the work surface of the desk.