How your resting heart rate could flag a looming cardiac event – and how to check it
If your resting heart rate is abnormally high or low, it could signal risks that need the attention of a doctor, say heart ...
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What is a normal heart rate?
You probably were told your resting heart rate at your last checkup. Or maybe you get alerts throughout the day thanks to a fitness tracker or smart watch. But what does the number really mean? And ...