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Could excercise be doing any damage?

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We are told to 'get more exercise'. Walking, cycling or going to the gym are recommended, but do they really exercise your heart? Could it be doing any damage? As our heart is a muscle, the more it contracts, the more exercise it gets. To provide our body with energy, our body has to perform the process of respiration. This is a chemical reaction which uses the reactants Oxygen and Glucose to release high amounts of energy that can be used to make our muscles contract. Glucose + Oxygen --> Carbon Dioxide + Water Our body receives the glucose used in the reaction from the food we eat. The food is digested in the stomach and then the digest remains enter the small intestine. The small intestine has thin walls so that the glucose and other nutrients from the digested food can diffuse from the intestine into the plasma of the blood. Diffusion is a process of movement where a substance from an area of high concentration moves through a membrane to an area of lower concentration, this is known as moving down the concentration gradient. ...read more.


We used a metronome and stop watch to ensure that ensure that everybody exercised for the same amount of time and at the same rate. We also took the results at the same times for each experiment; this allowed all but one variable to change and make our results to be as valid as possible. We also ensured the data was reliable. To make the data the data reliable we repeated the test on different students and found the average. We also checked all the individual results to make sure they were concordant to eliminate any mistakes. We could have made the data more valid by using a digital heart rate and breathing rate monitor which would have provided a continuous stream of data and eliminated any human errors, however the techniques we used in this experiment were adequate to provide us with valid results. Exercise is known to have numerous benefits on the human body. A person with a high level of fitness regulates their cardiovascular system more efficiently. This means they can increase the concentration of red blood cells in their blood which allows them to hold more oxygen at a single point meaning their heart rate can be reduced - their heart will be stronger and more efficient at pumping blood. ...read more.


Running and jogging can cause damage to knees and ankles if a person is unfit and has a poor diet meaning there bones are lacking in strength. Exercising for the incorrect reasons can also be damaging to mental and physical health. Exercising with the aim of becoming underweight can deteriorate mental and physical health along with the possible risk of injecting steroids to gain advantage. If your somatotype is 'ectomorph' it is possible that prolonged periods of exercise will actually have a detrimental effect on your body if you do not eat a balanced diet and consume enough carbohydrates. Also, exercise dehydrates you so it's important to make sure you stay hydrated and if you're asthmatic it can put extra strain on your lungs and trigger attacks. In conclusion I would still strongly recommend exercise as I the benefits listed above far outweigh the negative side effects it can have. If exercise is undertaken responsibly it is unlikely that these side effects will occur. Proper warm up and cool down procedures should be more widely publicised to reduce the risk of sustaining injuries such as strains, sprains and torn ligaments. ?? ?? ?? ?? Kris Statham Candidate number: 5238 ...read more.

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