Workout

Warm-up (600) 
600 swim 
…every 3rd 50 non-free 

Set (600) 
6 x 100 on 1:30 
...50 Easy 50 Fast 
…descend 1-3

Set (1200) 
2 rounds 
Swim 3 x 200 on 3:00 
…last 25 stroke
…IM order

Set (800) 
2 rounds 
4 x 100's on 1:45
…25 swim/50 kick/25 swim
…fast kick

Cool-down (200) 
200 EZ