September 15, 2026 · 10 MIN
VO2max Plateau Breakers: Advanced Interval Progressions for Stale Fitness
When standard 4x4-minute or 5x3-minute VO2max intervals stop yielding gains, advanced progressions like Billat 30/30s, descending-rest protocols, and ascending-intensity blocks can restart adaptation. These methods manipulate time-at-VO2max to accumulate 10–15 minutes per session above 90% VO2max.
