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16 Forerunner 50 Owner’s Manual
traIn mode
How Do Heart Rate Zones
Affect Your Fitness Goals?
Knowing your heart rate zones can
help you measure and improve
your tness 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.
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You can set the low and high heart
rate limits on your Forerunner. If
you know your maximum heart rate,
you can use the following table to
determine the best heart rate zone for
your tness objectives.
If you do not know your maximum
heart rate, use one of the calculators
available on the Internet.