Kris Stallenberg 90-min Z2 (Endurance) Pushing #01 This workout focuses on building a strong aerobic base through two extended, challenging intervals at the top end of your endurance zone. The goal is to improve muscular endurance and fat oxidation, key components for long-distance performance. By holding a steady state just below tempo, you'll adapt your body to sustain effort efficiently. This session is designed around the principles of Coggan Power Zones, specifically targeting Z2 (Endurance) to maximize aerobic development without accumulating excessive fatigue. bike