Kris Stallenberg 120-min Z2 (Endurance) Easy #07 This workout breaks a long endurance effort into more manageable 10-minute intervals. Each block is performed in the middle of zone Z2 (Endurance), followed by a short active recovery. This structure, which adheres to the principles of Coggan Power Zones, can make the time pass more quickly and helps you stay focused on maintaining quality throughout the entire session. It's an effective way to accumulate significant time in the zone. bike