Abstract: A vehicle seat assembly is provided with a seat back and a head restraint assembly supported by the seat back. The head restraint assembly has a substrate with a main body extending from a transverse mounting surface to an upper edge of the head restraint assembly, and a projection extending downwardly from the mounting surface of the main body to a lower end of the head restraint assembly. The main body and the projection cooperating to define a continuous support surface for an occupant. A first massage element and a second massage element are supported by the projection. The first and second massage elements and the lower end of the head restraint assembly are positioned between the mounting surface and the lower end of the head restraint assembly. A head restraint assembly and a method of controlling a vehicle seat assembly are also provided.