Heart rate

Monitoring your heart rate while you’re exercising can help you get key benefits without overdoing it. Johns Hopkins experts walk you through what you need to know.

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Is a low heart rate bad for you? Slow heart rate can cause fainting if you’re not an athlete, but it could be a medication's side effect.

It's hard to compete against the Apple Watch or even an app on your phone when it comes to personal heart-rate monitors these days. However, Eko, a

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