In order to steer clear of its harmful side effects, swap them with green tea, which is a much better alternative. Apart from cleansing the digestive system, it also helps in boosting the body's metabolism, facilitating weight loss. Finally, before starting a sugar detox, enlist the help of friends and/or family members for support. "You need people around you to help you be successful," Lustig said. Starting with day four, you can add one apple and one dairy food each day. Use fennel in a juice with apples and carrots, or try this simple genius recipe from Giada De Laurentiis for roasted fennel with parmesan.