Lo-Bak TRAX functions on 2 simple biomechanical principles. 1) A Flat spine requires less force to traction or decompress. 2) Pushing is easier than pulling. As simple as it sounds, Spinal Traction/Decompression has never been done like this before. This is according to the FDA who told us they had never seen a device designed to function like Lo-Bak TRAX and that we were introducing new scientific technology to Spinal traction.