Hi Metroid,
Some of what JuggalinJuggalo describes- gentle ROM stretching , sounds very much like Sharon Butlers RSI info..
Repetitive Strain Injury

For much more info on TOS, RSI and chronic RSI see out TOS forum sticky threads , or use the site search tool for specific keywords or symptoms..
https://www.neurotalk.org/search.php

https://www.neurotalk.org/forum24/

I had very good help from a very good "hands" on chiropractor that also did soft tissue therapy. Plus a low level ( soft/cold) laser & IF stim..
Trigger points - overworked muscles - work postures , forward head, hunched/rolled forward shoulders -all factors.