Polar FT40 Heart Rate Monitor User Manual


 
Fatburn (heart symbol is on the left side of the line)
In fatburn zone, training intensity is lower, and the source of energy is mainly
fat. Therefore, fat burns efficiently and your metabolism, mainly fat oxidation,
increases.
Fitness (heart symbol is on the right side of the line)
In fitness zone, training intensity is higher and you are improving your
cardiovascular fitness i.e. strenghtening your heart and increasing blood
circulation to muscles and lungs. The main energy source is carbohydrates.
You can lock into the Fatburn or Fitness zones, depending on your goal for that
particular training session.
While in the desired zone, press OK for one second to lock. Fat burning
zone locked or Fitness zone locked is displayed. The wrist unit gives
a sound if you are training too hard or too light.
For instance, fatburn zone is locked in this image.
To unlock a zone, press OK for one second.
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