Swim intervals 1:00:00 [3] 2.75 km (21:49 / km)
1000 M warm-up
100 M @ 1:24
200 M @ 3:20
300 M @ 5:00 nailing the threshold splits, feeling good
400 M @ 6:34 still feeling strong
300 M @ 5:04 arms starting to feel fatigued here
200 M @ 3:19 relaxed much more and swam smooth. HR stayed lower
100 M @ 1:26 started very smooth w/breath every 4 strokes. pushed it the last 50 but felt solid.
150 M cool-down