Hi. My name is Charles and I'm one of the math teachers from the Maxim Workshop. I'm just going to now teach you how to do some maths. Hi. I'm going to teach you how to calculate your heart rate. Now, in health and fitness, heart rate is considered something to be a good measurement of how fit you might be. You might want to consider trying to have a rate around say sixty beats per minute and that's considered as being healthy. Now, athletes go lower and the more obese or unhealthy you are, your heart rate goes up and it's a measure of how hard your heart has to pump blood around your body for obviously respiration and energizing yourself. So I'm going to show you basically how to calculate your heart's rate. Now if we denote heart rate by HR, we got to see that it's simply something that you have to do by measuring. I mean, there are some equations out there but obviously what you want to do is get your own heart rate and an equation will only give you say the required amount for a certain health record. So what you would want to do is first of all, calculate your heart rate in one minute. I'm not going to do that now but what you would want to do is select an area where you have a pulse reading. So this would probably be on this side of your palm here, on your wrist and you stay there for say about a minute. And sometimes, you can get a vein popping through your skull here and you might just want to put your finger there, wherever there is a vein and you can sense obviously the movement of blood that will give you a pulse. After about a minute, what you want to do is record that measurement. So let's say that you acquired a heart rate of 69 beats per minute, what you would want to do now is perform this again twice so you can have three measurements. So you might get on the second one 71 BPM and 68 BPM. Now after this, what you want to do is sum all of those. So you've got 69, you've got 71 and you've got 68. All you've got to do now is sum all of them and take an average of the three. So you've got 9 + 1 which is 10 + 8 which is 18, add one there. So you got 6 +6 that's 12, add this 7 and that 1 and that makes 20. So now you are dividing 208 by 3. So 3 cannot enter 2, so you put 0 in front and 2 there, cross that 2 out, so this 2 now becomes remainder, place it up there. Okay, what you want to do is see how many times 3 enters 20. Now 3 x 6 is 18, so you put the 6 up here and cross this out and the remainder from 18 is 2. So now you want to check how many times 3 goes into 28. So now what you want to do is see how many times 3 enters 28. Now if you do 3 x 9, you get 27. So you put 9 there and put 0 there. Cross this out. Now the remainder would be one. Now this is the decimal point here which was that 0 there which is not a part of the 208 so you put a decimal point there. Now 3 enters 10 3 times remainder 1. So as soon as you've got one number after the first decimal point, that's enough. So now you've got a recording of 69.3 beats per minute. And that's how pretty much how to calculate your heart rate. .

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