I was told a long time ago that one key to weight loss was to record all your food intake each day. That seemed like a difficult task to me. That changed with the advent of PDA's. I have used Diet Organizer Mobile to lose 50 lbs over the past year and maintain it. Recently Bev downloaded it to her PDA and although she had lost weight over the past year without it, she is now losing about 2 lbs per week by making sure of what she is eating. It is remarkable how well it demonstrates the relationship between calorie input, calorie burn, and body weight. By using it in combination with Fit Day, we determined the calorie restriction to get to a goal weight by April 20 when we go on the Florida Bike Safari. We've already achieved a 15 pound reduction which is has made an appreciable difference to the energy required to power the tandem. In spite of the fact that I have changed the cassette to a higher gearing, the overall impression of energy needed to maintain speed or climb hills has been reduced. The perceived improvement of power to weight might be confounded by the addition of an 7th gear and a new chain but a 15 lbs. reduction would be like moving from our vintage steel framed bike to a carbon or titanium one. This in combination with her spinning and our continued cycling should improved her strength and endurance and will make those longer rides at the Safari a breeze. I can't wait to try.