I’ve historically used a round medical lab style stool and sat on its edge to force my back straight per recommendation of a spinal specialist after I had a her

I’ve historically used a round medical lab style stool and sat on its edge to force my back straight per recommendation of a spinal specialist after I had a herniated disc in my teens and have had repeated problems. The problem for myself at least is that extended sitting weakens the muscles that help stabilize my back most, so anything to activate it even if it feels uncomfortable is probably better for my health. Combined with a variation on pomodoro technique to get up more frequently and stretch I haven’t had any recurring back problems or sciatica for years as I’ve gotten another 20 years older.