Product Description
Conveniently calculate your heart rate training zone at a glance using the zone chart. Or use this poster's formula to calculate a more precise and optimal zone that you measure over time. Laminated; 24" x 36".
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Conveniently calculate your heart rate training zone at a glance using the zone chart. Or use this poster's formula to calculate a more precise and optimal zone that you measure over time. Laminated; 24" x 36".