Fitdigits Default Maximum Heart Rate and Heart Rate Zones

Since we first started tracking heart rate on the iPhone back in 2010 (anyone remember the iPhone 2?), we’ve used the same default heart rate zones and calculations for maximum heart rates as our defaults – 220-Age was the maximum heart rate for anyone, and zones were cut up 10% per zone – period – … Read more Fitdigits Default Maximum Heart Rate and Heart Rate Zones

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