Kris Stallenberg 90-min Z2 (Endurance) Medium #01 This is a classic aerobic base-building session. The primary goal is to spend a significant, unbroken block of time in your endurance zone. This workout enhances fat metabolism and builds muscular endurance, which are foundational for all types of cycling. As per the Coggan Power Zones, we will target Zone 2 to promote aerobic adaptations without inducing significant strain. Focus on maintaining a smooth, consistent pedal stroke throughout the main set. bike