Just finished first run of wk 3 and a bit disappointed. Managed first 2 weeks no bother. Problem came on second 3minute run I just had to stop for about 10 sec to catch breath. I think it was mainly because the route I take just happens to go uphill at that point. Will I ever be able to run uphill for any length of time - I don't know!
Anyway hopefulyl run 2 will go better - fingers crossed