Can brisk walking count as Zone 2? Learn how to use the Talk Test, cadence and heart rate to stay in Zone 2, avoid Zone 3 drift, and understand what studies show about health benefits.

Your ultimate guide to Zone 2 Training. From its scientific basis to practical tips, learn how to incorporate this training intensity into your routine for optimal results.

Découvrez dans ce guide tout ce qu'il faut savoir sur l'entraînement en zone 2 (en anglais "Zone 2 Training") : définition, calcul des zones, bienfaits, conseils pratiques pour l'intégrer à son programme sportif.

We draw on decades of research from experts like Dr. Philip Maffetone and Dr. Stephen Seiler to explain why this zone plays such a critical role in building aerobic capacity, promoting recovery, and supporting longevity in sport.

Zone 2 is not just "easy running" or "moderate effort." It has a specific physiological definition that matters if you want to train it correctly: At this intensity, your body is primarily using slow-twitch Type I muscle fibres and generating energy through oxidative phosphorylation.

For most people, brisk walking at 3.0–3.5 mph (4.8–5.6 km/h) on flat ground keeps heart rate in the 60–70% range. Fit individuals may need to add incline to reach Zone 2, while deconditioned individuals might reach it at slower speeds.

"Use the free zone 2 walking speed calculator below — enter your age, resting heart rate, fitness level, and incline — and get your exact speed target, heart rate zone, and a personalised session plan in seconds."

Zone 2 training is often called the endurance zone, but its benefits go far beyond running longer. Learn how it improves aerobic fitness, recovery, heart health and overall performance, plus when higher intensity training matters too.

In other words, Zone 2 gives you all the health benefits of exercise, such as improving the efficiency of your heart; reducing blood pressure; and lowering the risks of cancer, diabetes, and early death.

Zone 2 training is the key to optimizing fitness and healthspan. A sports doctor breaks down the proper dose, frequency, and how to do it.