'Become a fat-burning machine in just four weeks' The Sun THE REVOLUTIONARY NEW DIET FOR FAST WEIGHT-LOSS, BETTER DIGESTION AND MORE ENERGY Everything you need to know to harness the power of intermittent fasting on a ketogenic diet to lose weight, improve digestion, and feel great for life -- with 40 recipes and two distinct 4-week plans. Intermittent fasting and ketogenic diets are quickly becoming two of the hottest nutritional trends.