Have you heard...

...How you can exercise certain workout effects in a precise and heart rate oriented way?

Workout effect: Regeneration and weight reduction
Workout intensity: very light
Heart rate zone: 50 – 60 % of maximum heart rate
Workout duration: approximately 20 – 40 minutes

Workout effect: Improvement of the essential endurance and stimulation of the metabolism
Workout intensity: light
Heart rate zone: 60 – 70 % of maximum heart rate
Workout duration: approximately 40 – 80 minutes

Workout effect: Improvement of the aerobic fitness
Workout intensity: moderate
Heart rate zone: 70 – 80 % of maximum heart rate
Workout duration: approximately 10 – 40 minutes

Workout effect: Improvement of the maximum fitness
Workout intensity: intensive
Heart rate zone: 80 – 90 % of maximum heart rate
Workout duration: approximately 2 – 10 minutes

Workout effect: Improvement of the already very good fitness condition with an increase of speed
Workout intensity: maximum
Heart rate zone: 90 – 100 % of maximum heart rate
Workout duration: less than 5 minutes

(see Polar)