What is "inversion therapy"

n. A therapy in which the patient hangs upside down or at an inverted angle, claimed to treat backache etc.

Inversion therapy involves being upside down or at an inverted angle while hanging by the legs, ankles, or feet with the intention of therapeutic benefits. The process of doing so is called inversion. It is a form of spinal decompression and is a form of spinal traction.