After a week off with back pain, I went out this morning.
I figured if it was too painful to run I would at least walk for 30 mins to maintain some fitness, but I did the run!
It was hard, particuarly when Laura randomly stops telling you when you've got 60 seconds left but I've done it now and feel OK to move on with the programme.
My back was ever so slightly twingy, but didn't get any worse while running and actually feels more flexible now, so hopefully it will continue to improve.
Thanks everyone for your encouragement on last week's post,