Answer:
A. 5 minutes
Explanation:
Workout or exercises are important in maintaining a healthy body system. When it is done the heart rate is usually increased . This is due to the heart needing to pump more blood to the other parts of the body in order to supply enough oxygen to them as a result of the tedious activities being undergone.
The intensity of the workout however is too difficult if the heart rate has not returned to 120 beats per minute (bpm)within how five (5) minutes.
