Workout

Warm-up (1000)
2 x 500
…#1 - every 4th 25 stroke
…#2 - every 4th 25 kick

Drill-set (600)
12 x 50 on :50/1:00 (keep good form) 
…25 drill/25 swim - finish w/turn 

Set (900)
12 x 75's pull on 1:10/1:20
…d1-4

Set (500)
20 x 25's on: 30/:40 
odd - good form - Max. DPS - streamline past flags 
even - hard 80% effort - finish w/fast turns 

Cool-down 
400 moderate to EZ 
50 kick/50 swim