I made my first run of 2011 on Saturday. A short one, too. About two miles, around the Monte Loma neighborhood (Lamplighter, Mayfield shopping center, along Central to Rengstorff, Rengstorff to Middlefield, then back to the Lamplighter). Probably about two miles (17:24) but I stopped twice along the way. I felt not bad during the run but needed to sit down when I stopped. The rest of the day, and even still now, my back muscles are sore. But rest and good posture seem to be helping with that.