Garmin fenix 2 Owner's Manual

Training Mode

The five commonly accepted heart 

rate zones are numbered from 1 to 

5 according to increasing intensity. 

Generally, heart rate zones are 

calculated based on percentages of 

your maximum heart rate. 
How Do Heart Rate Zones 

Knowing your heart rate zones can 

help you measure and improve 

your fitness by understanding and 

applying these principles:
•  Your heart rate is a good measure 

of exercise intensity.

•  Training in certain heart rate 

zones can help you improve 

cardiovascular capacity and 

strength.

•  Knowing your heart rate 

zones can prevent you from 

overtraining and can decrease 

your risk of injury.

You can set the low and high heart 

rate limits for each zone. If you 

know your maximum heart rate, 

determine the best heart rate zone for 

your fitness objectives.
If you do not know your maximum 

heart rate, use one of the calculators 

available on the Internet.