Question

why does our heart beat faster after running 100 m race​

Answer 1

Answer:

why does our heart beat faster after running 100 m race

The normal heart averages between 60 and 100 beats per minute. When your heart beats faster than this, you have a condition called tachycardia. When your heart races, it’s working too hard. It doesn’t have enough time to fill with blood or pump it to the rest of your body.

Answer 2

Answer:

When you are exercising, your muscles need extra oxygen—some three times as much as resting muscles. This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing