I tried this after suffering from costochondritis for many years. Very debilitating and easy to flare up made it hard to do anything for many years. Googling I found NZ Physio Stephen August, and knew I had found the answer. Have watched all his videos and started very slowly as I was in a pretty bad way. A few weeks later I am much improved, and will be using the backpod to cure my condition for good. Cannot wait to get back into life again and not have to worry about flaring this chronic condition.