Kris Stallenberg 30-min Z2 (Endurance) Easy #08 This workout combines a gradual ramp through your endurance zone with a steady-state block. The initial 10-minute ramp slowly increases the aerobic demand, preparing your body for the sustained effort that follows. This structure, based on the Coggan Power Zones framework for Z2, is excellent for improving aerobic power control and building fatigue resistance. bike