Exercise & Fitness
Heart Rate Drift During Zone 2 Training: Why Your Heart Rate Rises at the Same Pace or Power
Heart rate rising during Zone 2? Learn how cardiac drift, heat, hydration, pacing and aerobic decoupling affect your training data.
FITNESS · ADULTS
Target Heart Rate Calculator
Estimate age-predicted maximum heart rate and general moderate- and vigorous-intensity exercise zones.
YOUR DETAILS
Your training reference
Enter your age to explore the estimated heart-rate zones.
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How the estimate works
The American Heart Association describes an age-predicted maximum heart rate of about 220 minus age. It gives general target ranges of 50–70% of maximum for moderate-intensity activity and 70–85% for vigorous activity.
Important limitations
These figures are averages. Medicines and heart conditions can affect heart rate. If you have a heart condition, take medication that affects heart rate, or have been given a specific exercise limit, follow individualized professional advice.
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Sources checked and page updated on . This tool is for general educational use and is not a diagnosis or personal medical prescription.
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