i can't yawn anymore and i blame my neck/ribs. i had no idea breathing was so...complicated but i do feel like it is one of the main contributing factors to to my tos.

yes core strengthening for me right now is doing the transverse abdominus. my pelvis is very hypermobile, due to weak hip muscles (?) and core strength. if my hips arent in good alignment then i cant breathe at all and my neck'll tense up. i think to really address TOS you need to address the entire trunk, including hips

so far im doing okay with the transverse abdominus exercises but i also go into pt weekly and have my pt check my ribs and neck so i feel its worth the money/risk. by myself i'd probably be too scared to try.

shoulder strengthening i still can't manage at all. im wondering if building up core strength would make shoulder strengthening easier but somehow i dbout it