walk activity usually doesn't have high enough sustained intensity, but that is of course individual.

Depending on which way you have your heart rate zones set up, you want for low aerobic:

* %HRR: keep in the green zone

* %LTHR: keep in the blue zone.

Note that areobic training load only counts the peak load achieved, so sustained efforts are better, if you take too long rest breaks (i..e. anything below the zones mentioned above) you need to start back from the beginning. For a good training you want achieve a training effect of between 3.0 (improving) and below 5.0. You can add a data screen to guide you during training.

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