Just completed day1 week 1 I mistakenly thought it would be easy as I had done it twice before but after a 2 week break it was quite hard.
Didnt jog very fast but took me 4 runs to feel I had the speed right did complete all of the 8 runs but didnt quite feel recovered in the 90 second walk.
I found the 2 minute walk that you have in week 2 better for me even though the run is 90 seconds.
Oh well I will be doing week 1 run 2 on Thursday lets see if I feel better then.
I did have a little backache after each run segment as I was slowing down not had this before.