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.
Cardiovascular is probably your answer
Cardio- the heart
Vascular- vessels
Circulatory- blood
Answer:
Answer is below
Explanation:
Long-term grief can increase people's appetites, but that short-term, or acute, grief can turn one's appetite off. When experiencing acute stress, our bodies go into fight-or-flight mode and shut down our digestive systems, so as to save energy to fight or run away.