Answer: Ambulatory monitoring of the electrocardiogram in 100 healthy 14 to 16 year old boys showed heart rates ranging from 45 to 200 beats/minute during the day and from 23 to 95 beats/minute during sleep.
All of the above apply to your question
Answer:
Maximum heart rate
Explanation:
The Maximum heart rate is the number of times your heart should beat per minute during physical activity.
The answer is A. Cleanliness