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How Exercise Affects My Heart Rate For my GCSE Biology course work I will investigate how exercise affects my heart rate. Predictions I predict that my heart rate will increase according to the time variable for the exercises and that the recovery time will be lengthen. The increase in the heart rate will occur because the body cells and the muscles involved during the exercise will require energy to function, increasing the time duration of the exercise will require more energy to function. The body cells and the muscles will get the required energy by the process of aerobic respiration. Aerobic respiration is the process where food (carbohydrates/glucose) is converted into energy by using oxygen and the by-products of this process is carbondioxide and water vapour. Food (carbohydrates/glucose)+OxygenEnergy+ carbondioxide+ water vapour If the body cells and the muscles don't get the energy required to function, the body cells and the muscles will...

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