I've had trouble with my neck for 4 to 5 months now. There is a muscle that runs from the back of my neck to my spine that always seems to be sore and limits the range of motion in my neck. I missed most of December trying to heal it "once and for all" but on the first class back I could feel how it was still tight and painful. While it doesn't look torn like MacDonald's (from TUF 2 with the bicep tear) you can see that the left (painful) side is larger than the right. Almost like it's stronger and more developed but I'm right handed. Why would a muscle be sore for months and swollen/larger than its parallel on the right side?