There is abundant research verifying the physiological adaptations attributed to endurance training, especially improved exercise capacity—the body’s ability to “sustain a given sub-maximal Black Diamond Force   workload for a longer period of time” (Gibala et al. 2006). For many exercisers, the rewards include improved cardiovascular function; decreased incidence of diabetes, high cholesterol and hypertension; weight loss; and reduction of body fat.

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