The perfect workout routine is one that combines strength training and some form of cardio. The problem is, most people hate doing cardio and will make up any excuse not to do it. A popular excuse is not having enough time. This article, however, will show you how you can spend only 20 minutes on…

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The most important factor for improving cardiorespiratory fitness (cardio or CR) is the intensity of the workout. Changes in CR fitness are directly related to how “hard” an aerobic exercise is performed. The more energy expended per unit of time, the greater the intensity of the exercise, the greater the effect on cardiorespiratory fitness. You…

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