1 to 9 minutes: A workout with a duration of less than 10 minutes is insufficient for the Hill pro- gram to complete all four phases adequately. The program, therefore, condenses a workout of this duration at various stages.
10 to 19 minutes: The interval durations initially are set at 30 seconds for a
A
20 to 99 minutes: All intervals last 60 seconds. If the user adds minutes to the
RANDOM
The RANDOM program creates a terrain of hills and valleys that varies with each workout. More than one million different patterns are possible.
MANUAL
The MANUAL program sets an intensity level that does not change automatically. While the work- out is in progress, increase or lower the intensity level as desired, using the arrow keys.
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