Well I did my gentle short recovery run okay this morning and once again this afternoon I was tired and ended up napping in my chair in the yard. I did drink a lot more yesterday, ate a bit extra too - oatcakes with peanut butter and sliced banana are my new favourite snack! So maybe long runs are just going to do this, I might try a slightly shorter long run next week, years ago I always used to scale back every 4th week of training.