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The size of the body. It takes longer for the blood to travel through the body and back to the heart where it needs to be pumped again in adults. Newborn's blood doesn't have to travel as far, and reaches the heart quicker.

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βˆ™ 17y ago
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βˆ™ 13y ago

They are not supposed to have faster heart rates unless they are exercising.

Another Answer: Young children, babies especially, will have higher heart rates simply by virtue of their smaller anatomy. Infants tend to range between 100 to 160 bpm. As the child grows to more adult proportions, their heart rate will fall into the "adult" range of 60 to 100 bpm.

They should definitely have a faster heart beat and respiratory rate as their metabolic rate is higher, therefore the body needs an increased amount of oxygen.

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βˆ™ 15y ago

Their bodies are smaller and it takes less time for the blood to travel thru the body and back to the heart. Smaller the body, faster the heartrate.

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βˆ™ 14y ago

three times faster than the beat of adult heart.

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βˆ™ 14y ago

yes because children do more things than adults like going to the park or riding their bikes! Also, old people are about to die so their hearts are weak and pump much slower.

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βˆ™ 13y ago

a adults heart rate is slower than a child's heart rate

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βˆ™ 11y ago

Babies pulse rates is higher because the organs of the baby should take up more oxygen than usual so the organs would rapidly grow because it uses more energy for the baby to develop.

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βˆ™ 15y ago

In general, higher metabolic rate.

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βˆ™ 17y ago

Yes.

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Q: Why newborn heart-rate is higher than adults?
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