There are three types of common intervals. Each one improves a specific energy system
and relates to a particular heart rate range.
- Aerobic Intervals are performed at 50-80% of the maximum heart rate.
- Aerobic/Anaerobic Intervals are performed at 65-92% of the maximum heart rate.
- Anaerobic Intervals are performed at an "all out" intensity with short durations.
By repeatedly exposing active muscles to high intensity exercise, you improve their resistance to
fatigue. As a result, riders will be able to sustain a given exercise intensity
for a longer period of time, increasing their endurance.
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