Observing your body and changing positions whenever they become uncomfortable is far better for your long-term health than is a well-engineered chair. I now ro

Observing your body and changing positions whenever they become uncomfortable is far better for your long-term health than is a well-engineered chair. I now rotate between a standing desk, a normal desk, a couch (only when reading/exploring - typing here is tougher), and the floor, and all of my back problems have disappeared.