Can anyone relate to this symptom - it’s one of my worst symptoms and basically stops me living any kind of life. If I sit hunched over playing a board game for instance (cooking is the worst as I have no choice but to do that, but even sitting in the car causes it) I can feel all my muscles/ligaments/fascia in my mid/upper stretching and pulling. If I do this for too long maybe more than 10minutes I will crash ie get very sleepy , nauseated, back of head pain, lose words, get irritable etc and wake up then next day with flu like symptoms muscles aches reduced stamina. I really have no idea what is going on other than some kind of laxity in those tissues that’s causing histamine release or something? I also feel that possibly it’s a collagen issue as my spine at the T4 hurts more and more the more I stretch these muscles, maybe it’s moving out of place?. Maybe you get similar in your neck if you have CCI? Any thoughts?