I loved week 4, each run went really well and I was amazed and delighted every time that I could run for 5 whole minutes.
My last run was on Sunday and since then I have had a pain in my lower back/buttock area, causing me to limp a little while walking.
I usually start the next week on a Tuesday or Wednesday, but will wait until Friday to see if the pain resolves with stretching and rolling.
I am looking forward to W5R1, although runs 2 and 3 look daunting!