Resting heart rate is question 14 options: a) heart rate after completing a period of exercise.
b) desirable minimum heartbeats needed to reach a level of activity and maintain that heart rate necessary to improve your cardiovascular fitness.
c) number of contractions of the heart that occur in a one minute when your body is at rest.
d) the minimum number of beats per minute your heart must beat to be able to fall asleep.

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D is the correct answer.  Resting heart rate is the minimum number of beats per minute your heart must beat to be able to fall asleep. Resting heart rate is a number of times your heart beats per minute when you are not active. Before checking your resting heart rate, you had to sit quietly for at the least 5 minutes. Take your pulse for 15 seconds, then you had to multiply the result by four.