Freaking problem with TOS is that its one of several things that go together, not the only thing. Many of us have (I am guessing)

1. Whiplash - which means injured muscles & weakened zones wherein the wrong ones are overactive. Ta-da scalenes - ever ready to help out.

2. Bad posture from years of work in specific manners - eg FHP, rounded shoulders, weak back muscles, which mean pec minor syndrome comes along and so does carpal tunnel

3. Accident guys tend to have disc bulges, facet syndrome and stenosis also lurking. Freaking impossible to figure out which of these is working along with good ole TOS to make our lives a living misery.

4. So, I now think to address TOS you have to hit everything. No exceptions.

5. Another issue with TOS (for me), I became immobile, further weakening my core, my lower back muscles adding to the injuries i have.

6. Moral of story remain mobile, keep walking, doing cardio as much as possible. Keep your core strong.