Had a SC swim on tuesday after moderation day, after being away on camp for a week. Really struggled with CO2. Did a couple of 200m DYN breathing once every 25m - this is actually quite hard. You feel like you haven't actually had a breath and want to take a few! DYN in a 25m pool sucks.
Yesterday did 20 x 50s DYN. 5 each on 1.45, 1.35, 1.25, 1.15. Wasn't as difficult as I had anticipated.
This afternoon pulled out the wetsuit and did some no fins LC. Did 20 x 50s full packing on 2.00, holding 55sec and 4 and a half strokes per lap. Worked on technique. Followed this up with some push off and turn practice (6). Slow with firm push off works best.