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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 10-minute workout.
For every minute added by the user “on the fly,” each interval increases by three seconds.
A 15-minute workout consists of 20 intervals at 45 seconds each.
20 to 99 minutes: All intervals last 60 seconds. If the user adds minutes to the pre-set duration
while the workout is in progress, the program adds hills and valleys that are identical to the first
eight intervals of the Interval Training phase. This pattern repeats until the workout is completed.
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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