Kris Stallenberg 60-min Z2 (Endurance) Medium #07 This workout improves pedaling efficiency by alternating between normal and low cadence at a steady Zone 2 power. This challenges your neuromuscular system and muscular endurance in different ways within a single session. The entire effort remains in the aerobic zone described by Coggan Power Zones, ensuring the focus is on technique and base-building. Pay attention to how your pedal stroke feels at different cadences. bike