I was doing reverse wrist curls last Thursday, and about halfway through my 2nd set, I started to experience some pain in my left forearm towards the outside of the arm. I stopped after that. I started to do bicep curls and the pain is even more prominent while curling. Now, it's not excruciating, but its definitely enough so that I am very discouraged from doing anything like tricep extensions, bicep curls, hammer curls, etc, etc, etc, basically anything where stress is placed on the lower arm.
I have never experienced anything like this and if I had to put my finger on it, I'd say it was most like shin splints in my arm. It is very acute in that its in the middle/outside of my left arm only. I don't feel any discomfort when I move around during the day in regular operation, and I have not done any arm specific exercises since, but tommorow, it will have been a week since injury and it still doesn't feel any better.
Anyone know whats wrong with me? Better yet, anyone know how to fix what is wrong? I plan to not work my arms until I can resolve this, but I don't want to stop working out. I have continued to do chest/back/abs/legs...
(Also, if I was wondering on the best way to develop muscle definition in the lower pec. My upper pec is pretty stout, given I'm only about 170lbs, but it just tapers off into some fat. I have been benching 155lbs, but I still haven't seen any progress..)