As the 21 days progress, your body is eventually reintroduced to meat, dairy and gluten. This time ,however, you have been slowly adding back foods with the aid of digestive enzymes, Glutamine and Aloe Juice. WIth the addition of prebiotic and probiotic supplements at strategic times, your body starts to rebuild the good bacteria that is so imperative to digestion. Fermented foods are also a focus of the diet, with enough recipes and ideas to keep things interesting.