Inversion therapy involves hanging upside down or at an inverted angle to use gravity to naturally decompress the joints of the body. Hanging in this way, causes each joint in the body to be loaded in an equal and opposite manner to standing. Proponents claim that inversion therapy is particularly beneficial for the spine in that it relieves pressure on the discs and nerve roots; this in turn allows discs to recover lost moisture and to return to their original shape, decreasing the pressure they can exert on nerves.