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how fast can you heart beat[/tex]

A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute.

Explanation:

A normal heart beats at 60-100 beats per minute, however, the fastest it can go is 300 per minute.

Explanation:

a1 = unhealthy

a2= healthy

a3= healthy