I prefaced today's run with a couple of situps, and an actual session of stretching. During said stretch, a horrible cramplike pain shot me in the right side, and never fully subsided until, surprisingly, I started running. Perhaps my nervous system thought it more important to scream at me through my legs and lower back than from the wrenched pseudo-muscles in my right side.
I was able to run farther today than on previous days, but still in the grand scope of fitness, it was a pitiful run. Probably a grand total of a quarter-mile was covered in the actual running part. Nevertheless, it was an improvement, and the mile or so walk there and back was a good warmup and cooldown.