Zone 2 Cardio Training has become one of the most talked-about fitness methods for improving health, endurance and longevity. Unlike high-intensity workouts that push you to your limits, Zone 2 focuses on steady, manageable effort. It’s the level of aerobic exercise you can sustain for long periods while still being able to hold a conversation.

Despite its simplicity, Zone 2 training is incredibly powerful, with a large and growing body of scientific research supporting its benefits.

What Is Zone 2 Cardio Training?

Zone 2 refers to a specific intensity range of aerobic exercise. Heart rate zones are typically expressed as percentages of your maximum heart rate (HRmax). Zone 2 sits at roughly 60–70% of HRmax for most people.

At this level: • You can breathe comfortably. • You can ho

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