Workout

Warmup (400)
400 swim

Set (600/1000)
4 rounds
25 scull on :30
50 build on :50,
75 sprint/ez/sprint on 1:15

Set  (850/1850)
2 rounds
(200, 175, 150) 
...all swims on 2:30

Set (1300/3150) 
100, 75
2 x 100, 75
3 x 100, 75
4 x 100, 75
**all swims on 1:15

Cool down (200/3350)
200 ez choice