Enter The Zone: A Dietary Road map by Barry Sears PH.D. is a hardcover book that provides a revolutionary life plan to put your body in total balance for permanent weight loss. The book has 352 pages and is published by HarperCollins in 1995. It is a first edition book with a dust jacket and features the author's signature on the title page. The book is 9.5 inches long, 6.5 inches wide, and 1.1 inches high, with a weight of 22.8 ounces. It is a textbook that covers subjects such as nutrition, preventive medicine, healthy living, and diet therapy.