Well I promised an update, and yes, I did it! The first five minutes were the longest. When Laura chirped up I was expecting her to say I'd done 8 minutes not 5, but the rest was definitely mind over matter. Legs felt leaden but the tip for slowing down and pacing yourself was great, even though I found myself questioning whether I was actually jogging at some points. So there you go, it is possible and boy do I feel pleased with myself!
P.S. Someone asked yesterday why runninja as a name, well it's because I am quite large and run in all black. That said, I am definitely toning up through this programme and losing weight so who knows I may just go out and buy something in luminous pink when I graduate!