I have been at it just over a month. I am trying to loose bodyfat so I stay strictly in the "zone" of 50-100g a day according to Mark in the PB. He states that to maintain your current weight to be around 100-150. Those are his suggestions from the book. I plano on being in the "zone" until I can see my abs then, move to a maintaince of 100-150. So I guess it just depends on your own personal goals.