I now have to wonder if I may have had some sort of illness, albeit one that wasn’t at all obvious, over the last week or so. Since early last week I’ve been really struggling with my swimming. When I’ve got out of the pool I felt as though I’d worked very hard and was clearly tired, yet my times were significantly slower than they had been (almost 10% slower). I have taken five seconds off my rest interval, but I don’t think that was the issue. I couldn’t even swim my first three 50m reps as fast as I had been doing.
Then today I swam and all of a sudden I was back where I had been without anything obvious changing. It’s a mystery 🙂 The only explanation I have is that I must have had something wrong with me.