Answer:

HEART RATE

-Heart rate is the speed of the heartbeat measured by the number of contractions of the heart per minute.

RATE OF PERCEIVED OF EXERTION

-Rating of perceived exertion (RPE) can help you measure how hard your body is working when you exercise. Using a scale from 6 to 20, you choose a rating number to describe how hard the activity feels. You base the number on how tired you are, how hard it is to breathe, and how hard it is to do the activity.

PACE AND PACING

-is that pace is (obsolete) passage, route or pace can be easter while pacing is the act of moving in paces, or their arrangement or timing.

Explanation:

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