I completed this program a few years ago, and ran fairly regularly for a while before falling off. I started back recently, and was able to skip through most of the early weeks (I did the first run of the first 4 weeks, found them easy enough, and skipped to the next week). I had done a bit of running before restarting C25K, but was struggling to extend my times without the structure. I finished week 6, run 2 today, and can't wait to get back to full 5k runs. This program is so good.