Against all odds (extreme laziness and a Netflix subscription) I've nearly managed to complete the first five weeks, and only have Week 5 run 3 left.
Problem is, I've been running on Hampstead Heath so far, which is gorgeous but very, VERY hilly. Managed the 8 minute runs today (including slogging up Parliament hill twice!), but worried 20 minutes will be too difficult to sustain.
Any thoughts? Was thinking of either braving it (but concerned if I don't complete the run it'll be demotivating), or could run somewhere flatter?