Kris Stallenberg 60-min Z2 (Endurance) Easy #04 This workout builds your aerobic base in Zone 2 while incorporating short 'spin-ups' to improve pedaling technique and neuromuscular efficiency. The main effort stays within the Coggan Power Zones for endurance, but the high-cadence bursts help develop a smoother, more powerful pedal stroke without adding significant metabolic stress. Focus on staying relaxed and controlled during the spin-ups. bike