NEW YORK TIMES BESTSELLER - Mark Sisson unveils his groundbreaking ketogenic diet plan that resets your metabolism in 21 days so you can burn fat forever. "Sisson masterfully delivers a comprehensive guide . . . to finally achieve success as it relates to health and weight loss."--David Perlmutter, M.D., author of Grain Brain Mounting scientific research is confirming that eating a ketogenic diet could represent...