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How Exercise affects heart rate Aim My aim is to find out how exercise affects heart rate, I am going to find this out by doing Sit ups and taking my pulse and seeing how much it increases / decreases as I do sit ups for a longer amount of time. To get a good pulse I am going to take my pulse over 15 secs and times it by 4 this will give me a closer pulse than waiting for a minute because it would then increase / decrease as I measured it. Safety I am going to make this experiment safe by: 1. Warming up and down 2. Not over doing my self 3. Taking a rest after each time of sit ups 4. Not doing sit ups near a wall or table. Factors The factors that will affect my experiment are:> The speed I do sit ups> Fitness> Temperature Fair Test I am going to make this...

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