Best of luck to you starting the program! A 5K is a great motivator! I'd love to do one of those fun run types but not sure I could handle a mud one. hehe I don't like to get dirty and I think my OCD would just be driving me batty. I may look for a foam run or something else to do. Owie! Sorry about the Chicken Pox too! I seriously would LOVE to do the EE one of these years! Heck any Disney Race! I used the C25K Pro app. It cost just like $1.99 but it allowed you to play your music and it also gave a human voice to say when to run and when to walk. I liked that better than the "tones". Now that I've finished the program I think I'm going to download the B210K one but I wont start it until maybe sometime in about a month or so. I would absolutely re-do until you feel comfortable. I had to do that in Week 4 I think it was. Best of luck to all you who are just starting!!