Well got up this am and went on day 2. Not too bad legs still a bit stiff from day 1. Did find that I was getting pain across bridge of left foot which I pushed through. Have messaged the shop where I purchased the shoes from for advice.
Felt good bit better than day 1 in terms of breathing and recovery. Totally lost track of my intervals so ended up missing the half way mark to turn back. Actually thought I was going slower than day one as i thought I haven't reached a landmark. Then realised I had passed it which I can only see as a good thing.
Oh well extra few steps added to daily total.