I found a hill (very easy task around here) where it is quiet and about 300 meters up. I had 6 or 7 sprints up and a slow jog down in my head this it turns out was slightly ambitious and in the end i only managed 5 but it was nice to do something a bit different. A massive downfall i think in my running is that i am to repetitive and need to do a mix of runs and some cross training.