I have been doing Couch to 5k for about 2 weeks now and I can feel that it is working. As I ran earlier tonight, I was able to run faster and finish without being sore and too tired. Some nights have been hard getting going, but once I am doing it I actually enjoy it because I get some alone time and I get to listen to my music. I also feel great when I am done. If anyone is interested in getting into running, I would definitely recommend this program. It makes the task much less daunting, and it is free!