My neck, shoulder and back didn't hurt at all while in Costa Rica a few weeks back and I was lugging a 50 lbs military backpack back and forth.
My girl said it was probably the warm weather.
I noticed the difference soon as I got home and felt the cold weather.
I woke up stiff and not in a good way ladies and sexually confused young men...My back was stiff...How stiff you ask?
This stiff:
With...
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