Kris Stallenberg 120-min Z2 (Endurance) Pushing #10 This session is a 'Mixed Bag' designed to keep your body and mind engaged. It combines several types of Z2 stimuli: a slow ramp, a long steady-state block, and shorter intervals with Tempo-level surges. This variety simulates the unpredictable nature of a real-world ride. The core principle remains building your aerobic base within the Z2 guidelines of the Coggan Power Zones, but with added challenges to improve your versatility. bike