The heart rate zone formula is flawed, especially for women. Here's how to rethink your training.

That tension becomes especially clear with heart rate zone training, a popular five-tier system that endurance athletes use to measure effort and fine-tune performance. The well-known formula is ...
Women's Health

Why the benefits of heart rate training are too good to ignore – and how to get started

Not that it was ever unpopular, but it’s fair to say that running is going through somewhat of a renaissance right now. Data released by Sport England in April of this year revealed that 250,000 more ...
Runner's World

Struggling to Stay in Zone 2? This Personalized Approach May Help

You likely know the importance of zone 2 training—low-intensity miles that are the foundation of distance running plans. The challenge? Finding your personal zone 2 range, and sticking to it. That’s ...
Men's Journal

What Exactly Zone 2 Heart Rate Is and How to Calculate Yours

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