I've had back & shoulder problems for years (have a shoulder joint replacement) and found many years ago that working in a semi-reclining position kept my muscles from tightening up. I've had several custom desks, chair modifications, etc. over the years but never anything as cool as what I've got now. My husband built it so I've go to get the instructions from him, but for now you can see how versatile it is. I can work or view the screen from 3 different seats, and when I'm not working the whole thing collapses and swivels out of the way.