I just started the couch to 5K and I haven't seen anything on the sites regarding the pace at which I should start. The podcast encourages a "brisk" walk. I have short legs but I used to be a fast walker. I am doing 2.5mph walking, and for my runs, I raise it to 3.0 so I'm doing what she calls an easy jog. I'm amazed that I can even run for a minute, so I feel like this is right for me for now. Am I walking fast enough? What do others do?