Couch to 5k

I don't know how many ppl have heard of this program but I'm starting the couch to 5k to tonight. Google it, it's a way of working up to great fitness from nothing!! There's heaps of iPhone apps, I'm using a free one that's called 5kRunner, and the person on the audio prompts you what to do. Eg: walk 1 minute, run 1minute) It's all interval training and its meant to be about half an hour for 3 days a week. Pretty reasonable I'd say. My boyfriends doing it with me to help keep me motivated.