I'm just restarting the program after a long hiatus and I was looking at the running intervals on Health Unlocked. To me, it looks like wk 5:3 really should have been wk 6:3. That jump just seems a bit arbitrary. I used an app on my phone the last time I did a c25k and it had a consistent progression. I'm not knocking it and I'll probably give it a go, but I was just wondering because I've never seen another program with those intervals. Happy to be running again and back in this community!
Edit: added and amended chart for clarity