The weather was very uninspiring this morning (thunderstorm, rain), so, even though I did not feel up to it, I went on a bike ride. About 6 miles into it, I hear a loud pop... and it just became harder to pedal, but it was getting windy, so I persisted a bit longer. Eventually, I noticed that the rear wheel was not true and the rear brakes seemed to get jammed. I turned around and headed home, stopped by the LBS a block away to deal with the wheel. I had broken a spoke.