The first time I saw the Sit Fit video, I was intrigued by the design and the concept. I immediately decided to give it a try and placed an order. It has been about two months since I have been using Sit Fit and it has been a very good experience. I feel that the design makes one sit in a position very similar to vajraasan (a yoga posture) which automatically keeps the spine erect and hence, you dont even need any lumber support. However, it can take a few weeks for someone to get used to it. The table is also very light and compact so that it can be moved anywhere in the house easily. All in all a good product, especially for those who need to work from home on a laptop for long hours.
First thing I noticed that after sitting on this chair, the pressure on the diafram is reduced and the abdominal part is lowered automatically. This will have positive impact on breathing.