= Full article availableAbstract
A wave of new gadgets promises to help count calories that you burn. These pricey gizmos, from Timex as well as fitness companies such as Polar and Nike, go beyond the familiar pedometer to monitor heart rates and energy consumption. Some are home versions of the calorie-counters at fitness clubs. Many look like—and double as—wristwatches.
The full text of this article is not available online. Order this issue »