St. George, Utah
Something we like to do with our newer swimmers (and sometimes the older ones, too, for fun and fundamentals) is what we call "Dizzy 50's:"
See Previous Submissions from Coach Caldwell:
Hypoxic from Utah - December 16, 2009
Free Swimming Workouts, Sets, and Dryland Exercises from Professional Coaches Around the World
4 x 25 FR @:45 - NO BREATHERS
4 x 75 FR @2:15, taking two breaths per length, at same locations each 25 (helps if you do kick counts and SL!)
4 x 25 CH @:45 - NO BREATHERS (No Backstroke, for obvious reasons)
4 x 75 CH @2:15, taking two breaths per length (3 for BR), at same locations
4 x 25 FR @:30 - NO BREATHERS