Workout

Warm Up (600)
200 swim/200 kick/4 x 50

Set (500)
12 x 50 on :50
…desc 1-4; 5-8; 9-12

Set (600)
12 x 50 on 1:00
…odds 25 kick/25 swim
…evens 25 drill/25 swim

Set (1600)
4 x 400
…#1 reverse IM on 7:30
…#2 broken 100 10 sec on 6:30
…#3 and #4 on 6:00

Cool-down (200)