This reminds me that I haven't aired my ailment - since the marathon VA road trips, I have had very angry upper back muscles, particularly on the left side. Before my chiro visit, I was having tinglies from fingertips up (thumb, index and ring, for those wondering) when sitting in certain positions. That has mostly gone away, but I could certainly feel the tightness and tingle on the trainer today. I'm guessing that beer and massages would be the best way to address the problem.