I have been inverting for 15 months and had 90% less back and sciatic back problems and also feel alot better from this --I bought my own table off e bay and use it a few times a week ,,,,I recommended this months ago and had nobody respond --But at least they are flushing ...Take it from me iam much better off now then i was then i think feb march and april in 2005 i had back pain everyday or always pulling my sciatic out now its like i never had back problems!!!!!!!!!!!!!!!!!!!!!