Target Heart Rate Calculator

Optimising Your Training with Heart Rate Zones

Training "harder" isn't always better. To see consistent results and avoid overtraining, you need to train at the right **intensity**. Your **Target Heart Rate (THR)** zones tell you exactly how hard your heart should be beating to achieve specific adaptations in your body, from building mitochondrial density to improving anaerobic threshold.

The Karvonen Method: Why Resting Heart Rate Matters

Unlike simple calculations, the **Karvonen method** takes into account your **heart rate reserve (HRR)** — the difference between your maximum heart rate and your resting heart rate. This makes the zones much more personalized. As your fitness improves and your resting heart rate lowers, your target zones will naturally adjust, ensuring you continue to train at the appropriate intensity.

Health Benefits of Cardiovascular Training

Staying within your cardio zones regularly strengthens your heart muscle, lowers your blood pressure, and improves your cholesterol profile. Whether you're power-walking in Zone 1 or doing HIIT in Zone 5, monitoring your heart rate ensures that what you're doing is both effective and safe for your current fitness level.