During her 23-year professional tennis career, Betsy Nagelsen beat Chris Evert, Martina Navratilova, and Pam Shriver on the court, and now she"s beating the clock with a no-nonsense approach to fitness over 40. Presented in the classic For Dummies series style--simple language and easy-to-read pages peppered with icons, cartoons, and lots of sidebars to break up the 28 chapters in this 330-page book--Fit over 40 increases the most lethargic mouse potato"s (the term for computer-age slouches) understanding of the aging process, while offering a practical game plan for "turning back the hands of your body clock." Described by Monica Seles as "one of the fittest people I know," Nagelson McCormack is respected in the athletic community for her dogged devotion to keeping fit, and, with the help of veteran health writer Mike Yorkey, she inspires readers to follow suit in an entertaining, informative, and collegial way. As this U.S. Open Senior Women"s Doubles Champ educates you about metabolism (once it slows, you"ll automatically gain a pound or two a year unless you exercise), the three pillars of fitness (cardiovascular exercise, strength training, and stretching), the fundamentals of good nutrition, choosing the right exercise program, and even tips for checking out a gym, you"ll feel as if you"re getting the skinny from an informed friend. Filled with black-and-white photographs of Nagelson McCormack exercising, Fit over 40 is designed for busy people (indeed, she advises readers to initially commit to a workout that"s just five minutes long) who want to skip between chapters and absorb vast amounts of information quickly. To liven things up, you"ll even find sidebars on soccer star Brandi Chastain"s sports bra, a critique of fitness magazines and Web sites, and a list of inspiring fitness movies. --Deborah Geigis Berry