While watching an ice hockey game from the standing terraces in December 2013 (not wearing kybun shoes!), I injured myself and ended up with a slipped disc. By consistently wearing kybun shoes, doing exercises on the kybun mat and so on, the effects of the slipped disc diminished progressively. As a result, most of my day-to-day life is now pain free.
If you work a lot – and of course I'm a Chef and had to stand a lot, twelve hours at a time, with little exercise – then you do get a bit of, well I wouldn't call it pain, but at the end of the day the soles of your feet are sore. And in these shoes you don't feel a thing.