AdvertisementMinifasting: How Occasionally Skipping Meals May Boost HealthJanuary 12, 2015Allison AubreyEliza BarclayfacebookEmailThe 5:2 diet calls for two days per week of minifasting where the aim is to go a long stretch, say 14 to 18 hours, without eating. During these two fasting days, you also eat only about 600 calories, give or take. (the food passionat/Corbis)