The beauty of all this is in learning to read your own body. We are so used to relying on tests and charts and doctors that we overlook our own feelings about health.
I think people come here, or rather, arrive here, when they are just about to take that step. It is a process that takes time, and, above all, learning to trust yourself. The pioneers, like MissCast said, have done lots of research and posted it here. Use their learning, adapt it to yourself, tweak here and there. People have different approaches, some prefer to detox more slowly, others prefer to get it out as quickly as possible. You will decide what is best for you. You will know what is best for you.