Opinion

... in response to What is Heart Rate?
  1. Tamjid Hossain Tamjid Hossain Bangladesh says:

    Blood that is low in oxygen then returns to the right side of the heart where it is pumped back to the lungs to receive fresh oxygen. The 'heart rate' is the number of times the heart fills with and pumps out blood each minute. What is considered a 'normal' heart rate varies from person to person, according to factors such as age and fitness. An average heart rate is 60-100 beats per minute.

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