Adding declines and inclines on one of the hottest days of the year (and not a lot of sleep) was probably a mistake. Powering up the slope towards the end of my third rep of 9 minutes completely drained my legs and caused me to flake out halfway through my fourth rep (I decided my priority was getting home in one piece over finishing the run). I did take is some different sites, however, I just need to figure out a less severe way back up the hill. Details here.