they release a significnat amount of the hormone thottieness before and after get tired
The heart beat can increase due to stress and exercise. There are many other factors that can increase heart rate.
Because the heart has to pump more oxygen than usual to your muscles
It's not good at all.
Cycling, swimming, running are three exercises that will increase the heart beat, open up the lungs, and increase the endurance and stamina.
exercise which tend to increase your heart-beat rate also enhances your respiratory system . these mostly include running
The nervous system causes the heart to beat faster when you exercise. It itself is not an organ but a system.
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Because of the increase of pulse in your heart.
yes
No, exercise doesn't increase the size of the heart. Exercise does strengthen the heart so that you can become more active in life.
runing
when we exercise our heart beat increases due to the reason that during exercise the body need more oxygen which is carried by blood so more and more blood carrying oxygen is to move to the part for which we are doing exercise and so more of the work heart have to do to pump the blood so ultimately our heart beat increases