# How to improve your VO₂ max > VO₂ max — the maximum oxygen your body can use — improves with a mix of high-intensity intervals near your VO₂ max (for example 3–5 minute hard efforts) and a large base of easy Zone 2 aerobic training. Most people can raise it meaningfully over 8–12 weeks. It's one of the strongest predictors of cardiovascular fitness, health and longevity. Source: Lift Republic (https://liftrepublic.com/learn/how-to-improve-vo2-max) Category: Performance · Published: 2026-06-04 · Reviewed: 2026-06-04 VO₂ max is the headline number for aerobic fitness — and one of the best predictors of long-term health. The good news: it's very trainable. ## What VO₂ max is and why it matters VO₂ max is the **maximum amount of oxygen your body can use** during hard exercise. A higher VO₂ max means a bigger aerobic engine — you can work harder for longer. It's also strongly linked to **cardiovascular health and longevity**: higher cardiorespiratory fitness tracks with lower mortality risk, which is why it's worth improving even if you never race. ## How to train it The most effective approach is **polarised** — mostly easy, occasionally very hard: - **High-intensity intervals near your VO₂ max** — e.g. 3–5 minute efforts at a hard, sustainable pace, with recovery between. These provide the strongest stimulus. - **A large base of easy Zone 2 training** — conversational aerobic work that builds the engine and lets you recover for the hard days. Most "grey-zone" moderate training is too hard to recover from and too easy to drive big adaptation. Train your easy days genuinely easy and your hard days genuinely hard. Set your zones below. [[calc:heart-rate-zones]] ## How long it takes Expect **meaningful gains in 8–12 weeks** of consistent training, faster if you're new. Progress then slows and needs structured periodisation — which is where reading your real data pays off. ## Train by your data, not a formula Generic "220 − age" maximums are rough. Your pace, power and heart-rate history reveal your real zones and limiters. Our [athletic-performance programme](/programmes/athletic-performance) maps your [Garmin and Strava data](/learn/train-with-your-data) into a periodised plan that targets exactly what's holding your VO₂ max back. ## FAQ ### How do I improve my VO₂ max? Combine high-intensity intervals near your VO₂ max — for example 3–5 minute hard efforts with recovery between — with plenty of easy Zone 2 aerobic training to build your aerobic base. This polarised mix raises VO₂ max more effectively than moderate 'grey-zone' training alone. ### How long does it take to improve VO₂ max? Most people see meaningful improvement within 8–12 weeks of consistent training, with beginners improving fastest. Continued gains come more slowly and require progressively structured training. ### Why does VO₂ max matter? Beyond endurance performance, VO₂ max is one of the strongest predictors of cardiovascular health and longevity — higher cardiorespiratory fitness is associated with lower mortality risk. It's a number worth improving for health, not just sport.