Havamsu

Fix Inaccurate Garmin Fenix 8 Heart Rate

Struggling with erratic heart rate data? Discover expert tips to restore your sensor's accuracy.

2 / 6

Understand the PPG Technology

Your watch uses light-based sensors to detect blood volume changes, which can be disrupted by movement.

3 / 6

Master the Snugness Paradox

Wear your watch snugly to block external light without compressing capillaries and restricting blood flow.

4 / 6

Correct Your Watch Placement

For the best data, position your Fenix 8 exactly two to three centimeters above the wrist bone.

5 / 6

Prevent Common Cadence Lock

Keep your sensor array clean from salt buildup to ensure the algorithm tracks your pulse, not cadence.