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The heart rate zone formula is flawed, especially for women. Here's how to rethink your training.
The well-known formula is simple enough: Subtract your age from 220 to find your maximum heart rate. From there, each “zone” represents a percentage of that HR max number, from zone 1 (easy effort) to ...
Your heart rate can tell you a lot about your fitness and cardiovascular health. Your heart beats consistently, day in and day out, but you may not generally pay close attention to it. You might take ...
A few of the most important insights are heart rate variability (HRV), which describes the difference in time between the ...
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