Photographed By Aaron Richter. How do you really quantify your fitness age? You may be 25, but do you have the fitness level of a 20-year-old marathoner or a sedentary 50-year-old? Traditionally, fitness age has centered on the body's ability to utilize oxygen, with the best measures coming from individuals hooking up to a respiration mask and hitting the treadmill. Scientists would then measure how efficiently the body is utilizing available oxygen. But, now, after researchers in Norway evaluat...
Photographed By Aaron Richter. How do you really quantify your fitness age? You may be 25, but do you have the fitness level of a 20-year-old marathoner or a sedentary 50-year-old? Traditionally, fitness age has centered on the body's ability to utilize oxygen, with the best measures coming from individuals hooking up to a respiration mask and hitting the treadmill. Scientists would then measure how efficiently the body is utilizing available oxygen. But, now, after researchers in Norway evaluat...
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