I probably shouldn't be adding my two cents here because I haven't read through all the posts, but just want to say that ever since I've been in my postmenopausal years, the only thing that has helped me to lose weight was bicycling five hours a day every day (on a bike tour). I lost three pounds and ate enough for energy and nutrition. Otherwise, it's next to impossible for me to lose. Not a happy thought, is it? . . . unless, of course, one lives to ride and has the time as well.