The Equation: A 5-Step Progam for Lifelong Fitness - Hardcover

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.