Thanks for your reply. During my weight training I did a variety of exercises, of course it was just a high school course. I did do a lot of preacher curls, but I did other things as well. I can't imagine I was so imbalanced to cause this, but it was a thought that had crossed my mind. In response to your comment about joint mobility, it does feel like a sudden stop rather than the muscle stretching. However, my finger/wrist inflexibility makes me wonder still. I can barely sit in a pushup position without my fingers bending. I know I need to see somebody, but I don't know where to look. I went to the sports medicine clinic about a year or so ago and they just told me to stretch my bicep and that was about it. Felt like they kind of blew me off, so it was a bit discouraging.