Wearable Heart Rate Monitors
Here's How to Seamlessly Track Your Heart Rate With Wearables
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Although so much more than just a heart rate monitor, the Fitbit Charge HR ($150) gives you continuous, automatic, wrist-based heart rate and what is called "simplified heart rate zones." This smart tracker is just as easy to wear as a watch (and in fact, it is a watch) and also tracks your sleep, movement, and steps.