Question

Explain,why,the heart beats faster during and after an exercise?

Answer 1

Because of more oxygen at the time of running on the track. So that's why the heartbeat increases

Answer 2

when you are exercising your muscles need extra oxygen some three types as much as resting muscles . this need means that your heart starts keeping faster which makes for a quicker pules . meanwhile your lungs are also taking in more air hence the harder breathing