I kept my word: I bought the necessary tools, plotted my running route, downloading a nifty podcast of techno beats with cues for the switch from running to walking (Thanks Julia!), and I ran.
It was comical! My pants were falling down during every running interval so I'd spend the walking intervals rolling them up. I can say something positive though: I did it!
My first impression of the program's first and second weeks is that they are challenging, not discouraging.