Last Updated: April 28, 2026 VO2 max is the maximum oxygen your body can use per kg of body weight per minute (ml/kg/min) — the gold-standard measure of aerobic fitness. For men: a 20-year-old in good shape is 45–52, a 40-year-old is 38–44, a 60-year-old is 30–36. For women: 20-year-old 38–44, 40-year-old 32–37, 60-year-old 26–30. … Continue reading What Is A Good VO2 Max By Age And Sex?