Well, I got through it and at times it felt good, so I'm glad I did.
The "stepping stone" run involves going much faster than I did for my graduation runs. You run in time to the music, with 10 minutes at 150 beats per minute (bpm), 15 minutes at 155 bpm and another 5 mins at 160 bpm. When I did this run on Thursday I realised that I had been doing more like 120-140 bpm for my graduation plod *ahem* run.
So the upshot of this all today was that about half way through the first 10 minutes I was already really tired! But from time to time I forgot about my aches and pains and felt a bit like a runner. And I managed to get to the end, but only because by the last 5 minutes I had reduced my stride length so much that a toddler could crawl past me!
Sitting with frozen peas on my knee now, as it started to lock as I walked back.
Am I really cut out to be a runner? (say yes!).