September 26, 2026 · 12 MIN
Optimizing VO2max Training Around the Menstrual Cycle: A Phase-by-Phase Guide
VO2max performance fluctuates 2-8% across the menstrual cycle, with the early follicular phase offering the best window for high-intensity intervals due to low progesterone and superior ventilatory efficiency. Programming VO2max sessions by cycle phase maximizes adaptation and minimizes wasted efforts.
