The Equation: A 5-Step Program for Lifelong Fitness

Dan Isaacson has studied the "energy balance" that is constantly at work within the human body and has developed specific guidelines for living a healthier life based on that dynamic. Already featured in Parade and Rolling Stone and implemented by too many celebrities to name, Isaacson's "Equation" provides both the inspiration and the techniques with which people can improve their appearance, their health, and their lives. It includes:

* Finding the right balance of input to output-a personal fitness equation
* Worksheets for taking stock of your daily "body bill"
* Surefire tips for increasing quality of life, decreasing stress, and losing fat fast
* Customized plans for losing 5, 10, 20, or 50 pounds.

Best of all, the word "diet" never even enters into Isaacson's equation; instead, this easy-to-follow program capitalizes on the fact that humans are creatures of habit, and promises startling results based on small but significant changes in day-to-day behavior.

Dan Isaacson was the first personal trainer in Hollywood and has worked with Meg Ryan, Demi Moore, Richard Gere, Tyra Banks, Jack Nicholson, Robin Williams, Wesley Snipes, Alec Baldwin, Kirstie Alley, Michael Keaton, Laurence Fishburne, Andy Garcia, Benicio Del Torro, Ethan Hawke, Freddie Prinze Jr., Sean Astin, Ryan Phillipe, Jon Voight, Radio's Rick Dees, Jamie Lee Curtis, Lesley Ann Warren, Linda Evans, Linda Gray, Melissa Gilbert, Victoria Principal, and supermodel Vendela among many others. He co-authored John Travolta's workout book, Staying Fit, co-hosted Jane Fonda's work-out videos, appeared on Oprah and was previously "Good Morning America"'s first health and fitness expert.

Dr. Greg Payne is a preeminent expert on health and fitness. He is a professor in the Department of Human Performance at San Jose State University and is the physical science expert for the book. In 2000, Payne was invited to become a member of the prestigious Academy of Kinesiology and Physical Education-- one of his many honors.

Mark Laska is an entertainment publicist and an author. His books include Pilates Powerhouse, Body-Fat Breakthrough, and Hot Point Fitness.