This is an ergonomic chair someone gave me to try. John had to weld the broken wheel and I reupholstered it last night with some scraps I had on hand. So far, it keeps my spine straight and helps my breathing, resulting in more work output. We'll see how it does over time, but since it works my stomach, I'm in favor of it.
I don't know what I'm doing with Tremor today. Other stories are trying to lure me away, so if I can't move SE forward, I'll work on one of them.