Lynne,I found out about it here on Sparkpeople there was a blog about it ,Put on the Armband, Take off the Pounds, ("BodyMedia technology can automatically and accurately tell you how many calories you burn. Activity: calories burned, down to a minute-by-minute profile, PLUS steps and the time you spent in vigorous and moderate activity. Food: food-logging tool that give calories consumed PLUS a nutritional breakdown of your macro and micro nutrients. SparkPeople members can continue to use the site's Nutrition Tracker and enter their daily totals into the BodyMedia system.Sleep: a sleep efficiency score and your sleep/wake patterns along with how long it took you to fall asleep.The new BodyMedia FIT coach looks at your data and gives you personalized feedback based on your unique profile and goals. Also, if you use a heart-rate monitor, you can import the data and review it alongside your data from BodyMedia.") I think its gonna be a great tool for tracking and helping keep me motivated and accountable.