A chair is disclosed including a seat and a back that is adapted to tilt back with the seat when a user of the chair leans back. A lumbar stimulation device having pairs of massage rollers is attached within the chair back to a gas cylinder bracket that extends vertically through the chair back for attachment to a chair base lying below the chair seat. A push-button actuated gas cylinder is connected to the gas cylinder bracket inside the chair back. A push-button located on one arm of the chair is connected to the gas cylinder by a cable. When the push-button is depressed, the gas cylinder is actuated to generate a pushing force for pushing the pairs of massage rollers of the lumbar stimulation device in a substantially horizontal direction through the chair back to apply a pressure against the user's back.
