Wow, that was a really hard 'back to walking intervals' run considering I managed 20 straight minutes only 2 days ago. That last 5 minute run was the first time I really really haven't wanted to run and the only thing that got me through it was reading previously on this forum how tough it seems to be going back to interval running after the 20 min run and it gets better by week 7.
When I got home and faced our stairs I could only think...you've got to be joking, lol.