Iv'e been doing the runs with a day's rest in between but I am actually bursting to get out there EVERY DAY. Yes, the words of someone who has never ran and was indeed a couch potato until I started this. Im on WK2 only. Would it harm me to go on two executive days? Or should I do something like cycling or brisk walking on the days when Im not on the programme as I am very well aware that rest days are important???