This 4-week plan is designed to deliver a sharp boost in VO2max with minimal training time. Built for experienced athletes, it uses frequent high-intensity intervals, structured recovery, and progressive overload to increase your aerobic capacity and fatigue resistance - all in around 5 hours per week.

You’ll start with short, punchy efforts to activate your system, then build load through longer intervals and sprint finishes. A deload week supports recovery, before the final week challenges you to transfer that fitness under pressure.

This plan is ideal for time-efficient athletes with a solid base and a strong focus on recovery, sleep, and nutrition. Whether you’re preparing for a race block, breaking through a plateau, or reactivating top-end fitness - this plan gets the job done.

A higher VO2max means your body can deliver and use more oxygen - leading to better endurance, faster recovery, and more power when it counts.