Kris Stallenberg 120-min Z6 (Anaerobic Capacity) Pushing #08 This is a brutally effective workout using 'Anaerobic Over/Unders' to simulate the chaotic power demands of racing. Each block consists of repeated 45-second surges with very short 15-second 'floating' recoveries. This will dramatically boost your lactate tolerance and ability to recover while still working hard. bike