Woooo just finished week 4. Totally elated. after the 2nd 5 min run i kept running for the 5 minute walk phase making it a 10 minute run.
Lots of people on this forum have talked about hitting their stride and it finally happened to me...my shuffly pseudo jog lengthened out and felt smoother, i ended up doing another 5 and 6 minute run tacked on the end.
Probably not wise and i should stick to Laura's programme but it just felt great, so i ended up running for over half an hour in total.