I've been a bit ill so have only swum this week, not last. One swim I decided to check my time every 100m. I did 800m with the first few sets at about CSS but my last couple were slower. So I rested and managed another one or two sets closer to css.
Today I swam 800m in 17m10s. Which is rather slower than my CSS of 2.03 (I need to check that).
So I think I must usually swim around my css because I got it in my head that I needed to slow down, but that is probably because css is that much slower than the test pace. Oh dear!!
I think I'm going to try and make 2016 the year of the all-rounder. I've focussed on running this year, but brought swimming into it a bit more, but I've completely ignored the gym. And my running has really suffered! That final mile in races is much more difficult without strength training!!! Or maybe I'm just getting old.....
Did a quick 20 lengths this morning - correction: I did a css attempt at swimming!! I was just one second too slow on a 100m. Then I did another 400m which was 10seconds too slow. It's really quite difficult, since I am more responsive to the swimmers around me than I realised!!