If you are already doing it my guess is that your body is already adapted and you will do just fine. I think you should really make sure that your body is responding well, if you feel like it isn't working then don't do it for a day or so & then try again. Remember that NO ONE in the forums is a professional, so do your own research too. Have you read the Primal Blueprint? More info: http://www.marksdailyapple.com/health-benefits-of-intermittent-fasting/ http://www.marksdailyapple.com/how-to-intermittent-fasting/ http://www.marksdailyapple.com/fasting/