Ten Weight Loss Tips to Ensure Victory in the New Year's "Battle of the Bulge" by David Petersen
... A highly effective way of objectively monitoring your fat loss and lean muscle tissue gain is to monitor your body composition (% body fat, % lean muscle tissue and bone). Try to find a local personal trainer or fitness service that offers body composition tests. Body composition can be measured by a variety of different methods depending on the sophistication of the service. The simplest and least expensive method of determining body composition is by means of skinfold measurement.