I’m a chronic pain patient due to a back injury in 1991. I had surgery but it didn’t resolve the pain & spasms. I have an implanted medication pump and an implanted Dorsal Column Stimulator (like a TENS unit.) They help but I always have some level of pain & discomfort. Since I’ve been doing Curtis’ workouts I’m feeling stronger, with a little less pain and spasms, especially at night. Standing and walking are still difficult but with time & the exercises, I believe that they will get easier as I get stronger.