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Zone 2 Heart Rate Targets
Enter your age and resting heart rate to calculate the optimal zone for mitochondrial and aerobic base training.
Why do we need your Resting Heart Rate?
Unlike basic calculators that only use a percentage of your Max HR, we use the Karvonen formula (Heart Rate Reserve). It factors in your Resting Heart Rate (a key indicator of fitness) to provide a much more personalized and accurate training zone.