Your body probably was having a problem getting subjected to all those carbs at once. That is one of the purposes of OWL. Not only to develop healthy eating habits for life, but to rebuild your tolerence levels.

Instead of reaching for starch, why not pick up Atkins for Life? It has easy to read tables of foods to eat often, in moderation and on rare occaisons. Fruits, nuts, and even whole grains are much better for you and your body then refined sugar, flour, or high GI foods.