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The Karvonen formula sets heart-rate training zones using both your maximum heart rate and your resting heart rate.
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The formula: target heart rate equals (max heart rate minus resting heart rate) times the intensity percent, plus resting heart rate.
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The heart-rate zone calculator uses Karvonen so your cardio targets fit your current fitness.
The Karvonen formula sets heart-rate training zones using both your maximum heart rate and your resting heart rate.
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