Not much: but they also may help in detecting irregularities in the rhythm of the heart like premature atrial or ventricular contractions, atrial fibrillation, ventricular tachycardia, etc. There are also nice "toys"
Answered 9/28/2016
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NoNeedIfYouCanCount: Well, if you didn't have one you'd be in a lot of trouble. On the other end, a per cent of maximal possible heart rate is used as a gauge of the degree of exertion. It stems from Cooper's Aerobic books and helps you monitor your overall fitness, as is the time after exercise to get back to your normal rate. At your age, shoot for about 150 and 20-30 beats decrease per minute after.Formulas online
Answered 9/10/2014
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