The chart below from the AHA outlines the various target heart rate zones and average maximum heart rates based on age. The AHA notes that your maximum heart rate is often 220 minus your age.

Fitness trackers and smartwatches can make it easier to stay in your heart rate training zones. (Getty Creative) ...

Understanding heart rate zones is incredibly helpful if you're trying to achieve certain goals when you're exercising. With wearable fitness trackers being all the rage, it's easier than ever to ...

The target heart rate zone, or where he should try to keep his ... just check out this chart from the American Heart Association. A heart rate monitor is the most convenient way to keep track ...

These are the famous zone 2 workouts—keeping your heart rate between about 70 and 80 percent of its maximum—that runners, smart gymgoers, and everyone with a podcast is talkin ...

(Eliud Kipchoge's Zone 2 pace would be off the charts for most people ... explained—they are percentage ranges of maximum heart rate, with “soft borders” between zones.

As fitness trackers grow in popularity alongside workouts that use the devices like Orangetheory Fitness and Peloton's Power Zone program, you now have easy access to biometrics, like heart rate zones ...