5am Tempo Run

After 5 busy and somewhat stressful hours at work I took my meal period at 5:00 am and jumped on the treadmill for a tempo run. Immediately cranked it up to 13.3kmh and held it there for 6 K then I did a 1 K cool down. At first it felt ridiculously fast but after a K I got use to it. The breathing went from laboured at the start to almost easy as I went along. Could have gone another K or 2 but I wasn't to see how the things that hurt do with this sort of run.