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GCSE Coursework Question: What factors effect how quickly a person recovers from exercise? Research: To help me answer this question I went to the library to carry out research. I found out that when a person exercises they produce Lactic Acid in their muscles, this is the lack of oxygen in the body. To make our muscles work we need is energy so if we exercise twice a day we will need more oxygen than a person who just exercises once a day. Increased breathing rate also helps to expel heat from the body, which Increases Carbon Dioxide (CO2) levels in the blood as a result of more Cellular respiration, leads to the acidity of the blood increasing., and the result is an increase in heart rate and breathing rate, in order to expel the CO2 from the blood and exhale it. More blood is therefore passed through the lungs. The main...

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