Cardio treniruotės – kiek ir kodėl?
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Cardio training – how much and why?

As everyone ' s fitness, and especially aerobic capacity, is different, cardio training can be very varied and the best way to measure the benefits of your cardio training is to monitor your pulse rate , both during and after your workout. What determines the effectiveness of a cardio workout? There are two key factors that influence performance.
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