If someone also has some serious advice for shoulder pain related to sitting/working a lot in front of a computer, I would much appreciate this. I constantly ha

If someone also has some serious advice for shoulder pain related to sitting/working a lot in front of a computer, I would much appreciate this. I constantly have pain in my left shoulder for years now and cant find a way how to ease the pain. I have this pain the whole day, but sitting in front of a computer increases it. Already tested a lot of therapist and tried different sitting positions. Standing does not make it better.