This workout is best completed early in a training block, bridging the gap between early season power/speed development and more sustained VO2 max and threshold efforts.
These workouts break longer sets into small bouts, done above threshold with short rests in between.
The short bouts make sustaining a higher intensity possible, whereas the short rest intervals don’t allow heart rate to fully recover. In the end, you get a combined threshold workout aerobically and speed skill development neuromuscularly.
Ideally, this set should be done on a trainer to ensure consistency in effort and pacing. For the 20-second recovery between each bout, be sure you keep pedaling—don’t just stop completely. A major component of successfully completing this workout is managing the spike in heart rate through the short recovery.
10 minutes building Zone 1 to Zone 2 1 minute Zone 3 1 minute Zone 4 1 minute Zone 5 2 minutes Zone 2
Main Set 2 x 15 minutes of alternating 40 seconds in Zone 5-6 with 20 Seconds in Zone 1 5 minutes between sets in Zone 1
Cool-down 10 minutes in Zone 1-2