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In this report I will hopefully prove that my hypothesis, which is; 'the harder you exercise, the longer it takes for your heart to recover', is true.
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Fitness Coursework Introduction In this report I will hopefully prove that my hypothesis, which is; 'the harder you exercise, the longer it takes for your heart to recover', is true. I believe this is true because the harder you exercise, the harder the heart has to pump more blood to supply oxygen to your muscles. When you exercise, your heart beats faster and contracts more forcefully, pushing out more blood and increasing its stroke volume. During exercise, the return of blood from your veins to your heart increases, causing the ventricles of your heart to fill more fully with blood, stretching them a bit. Like other muscles, the heart contracts more forcefully if it is stretched a little before contraction. So the increase in returning blood also adds to the stoke volume by increasing the volume of blood in each ventricle and by causing the heart to beat more forcefully. By...
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