Workout

Warm-up (500)
400 swim
100 kick

Set (500)
200 IM 
...25 drill/25 swim
rest :30
Kick 6 x 50 on 1:20
…15m underwaters

Set (2000)
Swim 4 x 250  on 4:00
…descend 1-4
Pull 10 x 100 on 1:30
…neg split
 
Set (400)
8 x 50's on 1:15
…red lines

Cool-down (200)
200 swim