I'm not a fan of long reviews, so I'll keep it short. My wife has a herniated disc and use the equipment daily. It brings a relief of the spine. When I get up in the morning and can hardly stand up straight due to sports or heavy physical work, just hang in the machine and I feel an improvement of 80%. For the price you can not go wrong. Installation is adventurous and look Chinese but it is not about a piece of furniture but a back trainer, who belongs to the cellar or in the corner.