I've had a search about, and haven't found anything much. I was doing dumbbell pullovers, 9 days ago, for the first time. They murdered, at the time, and for days after. I was fine after about 5 days (which is a long time). However, if I stretch my triceps, I still get fairly bad pain in them. What the fuck is going on? Is it because I hammered an exercise I'd never done before?