Mark Sisson-author of the mega-bestseller The Primal Blueprint-unveils his groundbreaking ketogenic diet plan that resets your metabolism in 21 days so you can burn fat forever. Mounting scientific research is confirming that eating a ketogenic diet could represent one of the greatest nutritional breakthroughs of our time-and that it might be the healthiest and most effective weight loss strategy ever. Going 'keto' by eating high fat, low-to-moderate protein and low-carb foods enables you to bre