Catch your eye? Apparently this is the theory of one Jay Robb author of the book "The Fat Burning Diet". He suggests doing a 1 hour carb purge once a week to keep you out of ketosis so that your metabolism can pick up and NOT slow down. So I have 2 questions. My first question is, does this really happen? If one is in ketosis does their metabolism in fact slow down? It seems logical because when you stop eating carbs you inadvertantly eat less calories too even though you are eating a lot more fat which is the densest calorie macronutrient.

Second question. If it is so that ketosis does slow down your metabolism, then is the tradeoff worth it? Is it worth it to be ketosis and be breaking down fat and have a slow metabolism, or is it better to stay out of ketosis and have a fast one? I hope this second question makes sense to all of you. Thank you.