I've lost five pounds in less than a week

, I've been a bit headachey, and I'm thirsty all the time. Many have recommended that physically active people going on the SB Diet should skip Phase I and go directly to Phase II, in which high-fiber, complex (aka "good") carbs are eaten in fairly small amounts.
So I think it's time for me to transition to Phase II. I'll be gradually re-introducing whole grain breads & cereals, pasta made with whole grain flour, and some starchy vegetables, starting at one serving per day, and working my way up to 3-4 servings per day.