Reluctantly dragged myself out for a quick ride tonight – rainy, tired, generally fed up. So I optimized for time and went for just one flat-out lap of Arthurs Seat. Normally I try to keep my heartrate below 160, but today I was up at 167 or so. Result: climb completed 10% faster than last time. On the way down, the roundabout was busy so I hopped onto the cyclepath rather than the road, but then regretted it .. the road is much faster. Still, I got round in 12m30s which is better than the 13m15s I averaged last time out.