Disc One: Following a workout designed to verify your power and heart rate training ranges, cadence and pedaling power are the main focus of the workouts on Disc One. Nothing makes you faster on a bike then increasing your overall power.

Disc Two: Aerobic development is the name of the game in the three workouts on Disc Two. With a mixture of moderate-intensity Tempo intervals and SteadyState intervals at just below your maximum sustainable intensity, the workouts on this disc directly target your aerobic engine. Nothing makes you faster on a bike then increasing your overall power.

Disc Three: More challenging intervals fill the three workouts on Disc Three, designed to take advantage of the gains you've made in aerobic performance and now include intervals that target and increase your sustainable power at lactate threshold. Nothing makes you faster on a bike then increasing your overall power.

Disc Four: The three workouts on this disc feature high-intensity efforts. Power Intervals are very effective for increasing your power at VO2 max, and increasing performance at the high-end of your aerobic capacity elevates performance at lactate threshold and more moderate intensities as well. Nothing makes you faster on a bike then increasing your overall power.

Disc Five: The workouts in Disc 5 pull together all the work you've done so far. The interval intensities return to SteadyState and Tempo levels but keep the total workload high with longer efforts, and the whole Progressive Power Series ends with another shot at the CTS Field Test so you can measure and clearly see how much progress you've made.