I believe that it creates shocks to try and start the heart up again after a heart attack. (why the sticky pads are put with the heart in the middle)
Medical dictionaries is your answer
<span>ATP, or adenosine triphosphate, is the body's source of energy. This energy is acquired by the intake of glucose. Glucose is a monosaccharide, also known as the building block of carbohydrates. Eating larger quantities of carbohydrates means that your body is obtaining larger amounts of glucose. This glucose is a key component of the body's energy supply. Therefore, the presence of glucose can lead to maximum production of ATP.</span>
You give up some thing that you wanted but you get something back in return
