VO2MaxNorweigan 4x4 #2 @172 - CopyCycling35mTime46Stress0.88IntensityAbout this workoutJMac50Workout structure4:16 min @ 31-50% (31-50w)30 sec @ 108% (108w)2 min @ 31% (31w)3X4 min @ 108% (108w)3 min @ 31% (31w)4 min @ 108% (108w)4 min @ 31% (31w)