After over FOUR months of not running, this week is the BIG week. I feel strong enough and aligned enough to start running again. I am going to follow a walk-hike/run program. Has anyone here ever followed one? If so, which one? What did you think? I have read some interesting studies that, even for competitive/professional runners, walk/run programs have some big advantages time/energy-wise. I am angsting a bit over whether to do trails and/or pavement.