An occupant support includes at least one non-fluidizable module 100 having a support structure for supporting the non-fluidizable module on a ground surface 76 and at least one fluidizable module 66 also having a support structure for supporting the fluidizable module on the ground surface. The fluidizable and non-fluidizable modules cooperate with each other to support an occupant. The support for the non-fluidizable module bears less than all the weight of the fluidizable module and, in the limit bears none of the weight. An alternative occupant support includes at least one non-fluidizable module and at least one fluidizable module cooperable with the fluidizable module to support an occupant. The fluidizable module is sized to support no more than about 50 percent of the length of an adult human body and most preferably no more than about 30 percent.
