it will increase disc heite for 15 minutes and then gravity and the hydrostatic pressures will cause the fluid flow and the fluid flow there's a little bit through uh laterally through the dis but most of it comes through the end plates so from the vertebral body into the nucleus of the disc and you can draw fluid in under tension but the hydrostatic pressure overrides the osmotic pressure in gravity and then the discs lose all the fluid so it's a 15minute uh effect