That could easily be muscular.
Thoracic outlet syndrome refers to a group of disorders that cause pain and other symptoms in your upper body. Learn the three types of TOS.
my.clevelandclinic.org
"Wear and tear" is not harmful.
Nugget #67 (of 71) in Explain Pain Supercharged. Quick, simple, powerfully reassuring – you’re resilient, strong, robust, adaptable… It goes something like this.. Nugget #67....
www.noigroup.com
There's a difference between your neurological tolerance - where your brain decides to turn on pain - and your tissue tolerance.
In chronic pain, your neurologic tolerance is much less than your tissue tolerance (right)..
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Pain is a lot like water in a bathtub. When the water level is low-enough, you don't have pain. The more things going on in your life, the more you add to the stuff in the tub. Eventually, too many things make it overflow into pain. Surfing + running + weightlifting are too much for your nervous system. In this case, I'd back-off on the weight and volume and keep the water in the tub.
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