Relieve back pain and reduce the effects of stress. It's documented that Inversion was used as early as 400 B.C., when Hypocrites, the father of medicine, first watched a patient have his knees bound and ankles tied to a ladder to be hoisted upside down for a dose of what's come to be known as spinal traction. The Greek theories on inversion are still valid, but today there is a much easier way to relieve the back pains most people experience from time to time. The process is called Inversion therapy, and it can be the natural way to a better back and a better body. Inversion tables are now clinically accepted as a method of improving back pain and are being used by many thousands of people around the world.