Aspects of this invention relate to an adjustable bed that may include a motor, including a housing with a flange, an adjustable mattress support having a lateral surface, and an opening with a perimeter disposed within the lateral surface; at least one bracket coupled to the mattress support providing a lateral support surface inside the perimeter of the opening, the lateral support surface shaped and sized to laterally support the flange such that the motor is positioned to impart vibration to a mattress on the mattress support; and a resilient material disposed between the flange and the lateral support surface to provide mechanical insulation therebetween.