Just completed my W4R1 tonight and feel amazing! I did get a stitch towards the end of the first 5min run. Then I got MJ's tips about breathing deeply and it definitely helped and was fine for the next two runs. I love this!
And to add to my feeling like a runner, I even continued along my preferred route instead of taking a detour when I had to run past a group of teens and even someone who looks much fitter than me doing burpees in lycra!
Today, I even told a couple of friends that I'm doing this. And I've posted this on here - my first ever post. So that proves it - I am now a runner!