My two "runs" (both feet in the air at the same time) were 1:33 and 1:58. Stayed in blue zone on my effort measurement. Average is 1:05 minus 15 (is that right?) So should I go with line 12 Walk 1:00/Run 40 sec, x 20 reps. increasing my cadence, as I am able. Seems that will take until August, but better than setting on the couch.