Hi guys: I found myself with a entire week with absolutely nothing to do but play guitar, right after getting an awesome new boost pedal. Long story short, I've been basically playing almost nonstop all day and night. It's heaven to me, but now I'm starting to get some physical symptoms. I can live with the sore fingertips, even sore finger, elbow, and shoulder joints (hey I'm in my 40's), but now I'm getting a strange kind of "electrical charge" effect in my fretting arm (around the forearm) when I reach for certain chords. Is this something to be concerned about? Am I courting carpal tunnel syndrome or something? Do I need to give it a rest for a while?