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The Importance of Zone Two Cardio
"I was doing a lot of strength training, heavy pulling, but neglected my cardio. And I just felt kind of crummy," he says. " zone two is referring to a very specific sort of range of physiological stressors." The body is responding in a certain way to a certain level of intensity that roughly corresponds to the point just before a few metabolic shifts are made and then you progress into the higher zone.