Today I started week 4. As week 3 was quite hard, I thought that week 4 would be impossible, but I did it. I cannot believe that I managed to do both of the 3 minute and both of the 5 minute runs. Whilst my legs did ache, I didn't get out of breath. When I started this, I found it so difficult that I repeated week 1 twice, but by following the programme I really feel like I am making progress, and ran for a total of 16 minutes!