I really think that drinking plenty of water is one of the main keys to keeping weight off. Before I changed my diet I would never drink a glass of water. My ankles were always swollen, especially after a day at work, my fingers were often so puffy that my rings were really tight. Since I have made sure I drink at least one and a half litres of water a day I am fine. No puffiness or swollen ankles. What a simple thing to change though! and free too!