Calculate Target Heart Rate

The most prominent and accurate means of determining target heart-rate is the Karvonen formula. This formula calculates a percentage of the heart-rate reserve, which is the difference between the resting heart-rate and the maximal heart-rate. Heart-rate reserve = maximal heart-rate - resting … Read More

Target Heart Rate Chart

When we first ran the series "How Hard Are You Working" about measuring exercise intensity, we found that there were few charts that featured the various means of measuring heart rate and exertion.  So we designed this poster sized chart and we have sold nearly 1,000 charts since. This multi chart … Read More