> When such types of intense diets are discontinued, assuming nominal energy requirements were again being met, the body quickly adapts to the new situation and will replenish glycogen stores, rehydrate and begin to rebuild lost cellular proteins. This is reflected in the phenomenon that following the cessation of severe calorie restriction, body mass will increase by several pounds within days, due to mainly glycogen and water replacement initially, followed by the renewal of cells and cellular proteins.

Why had noone told me? This effect is a total diet killer, since if you try your first diet, and quit after 2 weeks, and see your weight ricket immediatelly, how are you supposed to know, that it wasn't all fat again?