Question

why our heart rate will increases when we run

Answer 1

The heart must beat faster during exercise because by increasing the heart rate, the body is able to increasecardiac output and deliver thenecessary blood flow to the muscles. During exercise the body's musclesincrease their activity level and consume more oxygen.

Answer 2

BECAUSE PROPER CIRCULATION OF OXYGEN DOESN'T TAKE PLACE WHILE RUNNING WHICH RESULTS TO INCREASE IN OUR HEART RATE