The following tips will help troubleshoot a low PAI score.
- Ensure your Fitbit is being worn snug enough and in the right position. Try wearing higher on your wrist and check if light can reach the sensor.
- PAI is more easily earned for higher intensity activities that elevate your rate for longer periods of time. For example, running, spinning and hiking.
- Start and stop workout mode on your wearable device to ensure all heart rates are captured for accuracy.
- Some Fitbit devices like Alta HR can't start or stop workouts. Instead, it periodically samples the heart rate. This feature can miss some heart rate data between samples at the beginning of a workout.