creating a lot of mental issues and anxieties around food and that's what I want to really make sure we stay away from okay which is why again if you start with food anxiety or binge eating do not do this how lo ketoviante ng should you be in a calorie deficit if you're doing a very rapid fat loss protocol there's a huge range ok so generally speaking the shortest amount of time I would do 72 hours like three days that's if you're going very very very low the longest amount of time for any one stretch is probably up to a month thirty days