A seat assembly is provided with a seat cushion and a pivotal seat back. Sensors are connected to the seat cushion and/or the seat back to detect a seating position. An actuator is connected to the seat cushion and/or the seat back for adjustment. A controller is configured to receive data from the plurality sensors, compare the data to determine if the occupant is seated evenly, and adjust the actuator to balance the occupant posture seating position. The controller is in electrical communication with an inflation device to inflate a first air bladder assembly in a thoracic region of the seat back. A second air bladder assembly oriented in a lumbar region, a sacrum region, and/or a scapular region of the seat back is inflated after initiating inflation of the first air bladder assembly for sequential posture alignment.