Good run today. Heart rate monitor was a bit crazy, so I mostly ignored it. For example, after I had taken about 5 steps at the start, my heart rate apparently went from 90 bpm to 170 bpm, stayed there for a bit then dropped to 125 bpm. Later in the run I watched it go down every second in this sequence: 163, 160, 153, 142. Mmmokay.
I ended up running 4.47 km in the 30 minutes at an average pace of 6:43 mins/km, average heart rate recorded at 154 bpm (with a max of 180 bpm. Seriously? I barely get to that when I do a flat out sprint!)