to The Beach!
Many people experience the symptoms you describe on their first few days of Phase 1, but this can be avoided. Include some legumes (beans) in your daily menu, along with at least 2 cups of dairy, and make sure you are eating at least 4 1/2 cups of veggies every day. Beans are full of the good kind of carbs that we eat on this plan, and your body will love you for it.
Good luck, and we look forward to getting to know you!