When I do Pump Up the Base intervals, workout A is pretty straight forward sweet spot training. My power level and heart rate stay pretty stable. Workout B is a different animal. Climbing, ladders, etc. blow me out pretty quickly. My heart rate goes anaerobic fairly fast and it generally ends in a beat-down. In a good way.
So here’s the question: did you and Lester intend for “B” workouts, the drills, etc. to be aerobic capacity intervals? That’s more or less what they have become for me. I keep the power out put in range of my FTP, but damn everything else is brutal, and by the end of the workout, I’m a wreck.
I sold my Pivot 429 and am building up an Evil Following MB. Stoked.