Workout

Warmup (600)
2 rounds
4 x 50 
100 kick
...10 seconds rest between

Set (600)
6 x 100 on 1:45
odds: 25  drill/25 swim
evens: kick underwater 
as far as can off each wall

Set (400)
8 x 50 on :55
…odds fly drill 3r/3l/3 full stroke
…evens full stroke

Set (1600)
4 rounds
4 x 25 kick on :30
100 catch up drill 1:30
4 x 50     
…1st rd fly  on :50
…2nd rd free on :40
…3rd rd breast on :55
…last round Free :40

200 cool down