A back lifting chair designed for treating and preventing back problems by reducing pressure on a user's spinal disc. The chair provides an up-lifting motion on the user's torso, reducing the weight and pressure asserted on the lumbar disc, and preventing any further damage to it. The chair can be modified from an existing chair. In one configuration, a torso lifting harness which can lift the user's upper torso is connected to the backrest of the chair. The back rest of the chair provides an upward and downward movement, hence partially or completely lifting the user from the seat, effectively reducing the pressure on the user's spine and back. The upward motion can be initialized by the user, or alternatively, it can be automatically activated by the weight sensor installed on the seat area which detects the prolonged period of sitting.
