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HOW MUCH DOES SMOKING AFFECT THE FITNESS OF A 16 YEAR OLD? To see how much smoking affects the fitness of 16 year olds we decided to test four people (two being smokers; two not) on their fitness by testing their heart rate after a given period of time of vigorous exercise. The exercise we chose for the 'guinea-pigs' was skipping. We were to test their heart rate as a control (before exercise) then they were to skip for two minutes, we test their heart rate again, then they skipped for another minute. Finally, we tested their heart rate after this skip, and also after a rest of five minutes. Then we re-tested their fitness with a repeat of the first test. We had to be careful that the experiment would not be too strenuous for anyone, we didn't want to cause pain or death to somebody whilst we...

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