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So glad you brought up the Keto diet, or Low Carb High Fat(LCHF). I have been on the keto diet and Intermittent Fasting for over a year now. I have had amazing results! I am even an endurance athlete and have taught my body how to utilize fat as my primary source of fuel during exercise! Check out this study on Keto-adapted ultra-endurance athletes from Jeff Volek at Ohio State University: http://www.sciencedirect.com/science/article/pii/S0026049515003340
I would agree with other curators that there is quite a bit of vague information in this article that needs to be explained much better.