How much of your body is fat? How much is muscle? How much should you eat? These questions and more are answered in The Body Fat Guide. The hard copy version of the book contains Body Composition tables that allow you to quickly look up your pounds of body fat, pounds of lean body mass, and your resting metabolic rate. An energy Balance Chart then allows you to monitor changes in your body composition as you modify your calorie intake and calorie expenditures. It's like balancing your bank account, only in calories and body fat!