Today's run went better than other runs have recently. I experimented with a few things. I tried to do a more thorough warm-up and warm-down, by walking around for a few minutes before and after the run. The idea is that you lessen the shock caused by your body going from full running mode to stillness. During the run, I tried out different speeds, including sections of just walking: something I wouldn't usually do on a 9km run. Despite the walking, I still broke 45 minutes for the run.