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The calculation of heart rate or pulse rate before and after exercise provides valuable information about the body's physiological response to physical activity.

*Heart Rate and Exercise*
1. *Resting Heart Rate (RHR)*: Measured before exercise, RHR indicates the body's baseline cardiovascular activity.
2. *Exercise Heart Rate*: Measured during or immediately after exercise, it reflects the body's increased demand for oxygen and energy.

*What the Characteristics Indicate*
1. *Increased Heart Rate*: During exercise, heart rate increases to supply more oxygen and nutrients to the muscles.
2. *Faster Recovery*: A quicker return to RHR indicates better cardiovascular fitness and adaptability.
3. *Fitness Level*: Regular exercise can lead to a lower RHR and faster recovery, indicating improved cardiovascular health.

*Example*
- RHR: 60 beats per minute (bpm)
- Exercise Heart Rate: 120 bpm
- Recovery Heart Rate (after 1 minute): 80 bpm

This indicates an increase in heart rate during exercise and a decrease towards RHR after exercise, showing the body's response to physical activity. #

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