Just done run 2, 2× 8 min runs, i really had to push myself on the second run! HOW ON EARTH am i going to manage running for 20 mins straight on the next one?! My legs just turned into lead on the 2nd run today! I just had to keep repeating "just keep running". I can't stop looking at the clock either.
How did you manage jumping from 8 mins to 20 mins of running?