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document.write("<h5>heart rate</h5>");
document.write("rather multiply by 6 , not 60, the ten second heart beat rate. garth");
document.write("<h5>Intensity</h5>");
document.write("I think the test of intensity is true for continuous activities, like running/cycling for 20-30min, but not for real high intensity-short period workouts like sprints.<br /><br />For high intensity-short period workout with short rest periods inbetween you should be going at around 8 to 10 out of 10, not 3-5.  Also, you shouldn't be able to talk during your exercise periods (you should be able to talk during your rest periods though).. Etienne");
document.write("<h5>What is the target heart rate p/m during excercise?</h5>");
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