Overview
Related questions
Overview
Related questions
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Heart rate
Heart rate is a measurement of the number of times a person's heart beats in one minute. Normal heart rates vary with a person's age and with excitement and exercise. Abnormal heart rates are too slow, too fast, and/or irregular (too much variation in the rate).
How long it usually lasts:
Chronic (lasts years to lifelong)
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A 34-year-old member asked:
How do you know your target heart rate?
1 doctor answer1 doctor weighed in
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