3 low carb days 1 day loading up on carbs is to basically silence the bodies alarms that go off on the 4th day. If continued without reloading carbs, your body will shut down your metabolic rate and tend to put fat on again and even cannibalize muscle in a survival instinct response to lack of nutrients. Its 3 low and 4th day high. Not 3x3. 3days of hi carbs would definitely cause hydrated weight gain. The 1 hi day is only to shut up the system that thinks you're starving. Give a shot, your belly button will week by week get closer to your spine ESPECIALLY utilizing the tummy/side thinning exercise well!