Slow thursday, still recovering?

So, I've been out for 13km in the new shoes. It was hard work. I don't think I'm recovered from the marathon yet as various joints and ligaments felt tied as I set off! Added to this are new shoes with a different heel strike and probably delicate feet after visiting the chiropodist. Everything combined to make it less than great. Can't complain about a 5:34 pace then, can I?