End of week 9 swimming

In view of the dodgy ankle and a bank holiday tomorrow, today's exercise had to be a swim. From the outset I was clear that I'd be slow, my arms were still tired from yesterday. The sets of 66m fast/slow alternation went well and the data show that I did achieve my goal, but only by a few seconds per length. As usual, I got progressively slower after an early-on peak. My best result was a pair of lengths at 42s each although some of the 'slow' were over 50s. I'm trying not to be too idle on the slow phase to artificially introduce a step and I think that is shown by there being a relatively consistent 3s differential between the fast and slow lengths.