I decided to just go with C25K week2 today so after a nice walk I went to the oval. I knew I wouldn't be able to manage 90 second intervals, and I couldn't. (Of course that is a rather self-defeating attitude which may have something to do with it.) Of the six intervals, I did one of 60 seconds and then the rest of only about 30 seconds. So not even good enough for week1!
But if I'm consistent maybe I'll be able to build up the running fitness a bit.