OK guys I need some advise please. I am due to do my W6R2 tonight I have been doing this plan at the gym on the treadmill, I have been doing my walking speed at 2.9 and my running speed at 3.5 (I think these are MPH, I am going to check with the gym tonight). Bearing in mind that I really do have to concentrate on my breathing. Do you think this is fast enough? Or should I add some incline and vary the intensity? At the running speed I do sweat and my heart rate is about 163 when I finish (I do have a natural high heart rate, resting can be anything between 74-85). Any advise would be greatly appreciated, I would so like to hear from other people who are doing this program on a treadmill.