I noticed yesterday that I have some bruising and discoloration on the outside of my right knee. It's kind of where the lower leg muscles tie into the outside of the knee. I have been doing a lot of stretching for my legs and and that spot has been a tight, painful area for many years. It doesn't hurt so I'm thinking that I must have released some adhesions or scar tissue in that spot, which would be a good thing, I think. Has anyone else ever noticed bruising after stretching?