Every individual has unique zones depending on age, fitness and medical conditions. Follow these steps to personalise your HR zones:

Step 1: Find your Maximum heart rate(MHR):
This can be done in a laboratory exercise test, a field test like the beep test. In case you have cardiac concerns a submaximal test might be better. A safer but less accurate method is to use a maximum heart rate formula.

Step 2: Choose your Zones:
Experts suggest different methods to choose your heart rate zones, pick one the complexity that you are comfortable with:

5 Zone Method:
Zone 1: Very light, 50 – 60% MHR
Zone 2: Light, 60 – 70% of MHR
Zone 3: Moderate, 70 – 80% of MHR
Zone 4: Hard, 80 – 90% of MHR
Zone 5: Very hard, 90 – 100% of MHR

American Heart Association:
Moderate intensity: 50% – 70% MHR
Vigorous exercise intensity: 70% to about 85% of your maximum heart rate

American College of Sports Medicine:
Aerobic training: 50-70 percent of MHR
Tempo and threshold runs: 71-85 percent of MHR
Intervals: >85 percent of MHR

3. Set Vibration alerts on your Frontier X for the zone you’d like to train in. Here’s a guide on how to https://www.youtube.com/watch?v=lU70BtxXF4c