Workout

Warm Up (600)
Swim 12 x 50's on :50

Set (1500)
4 x 150 on 2:45
... 50 kick/50 pull/50 swim 

Swim 6 x 150 on 2:15
... breathing 3/5/7 by 50

Set (1400)
4 rounds
Swim 2 x 150 on 2:10 
50 sprint on 1:00
 

Cool-down (100)
100 Ez choice