Alyssa ShafferAs fitness director for Fitness magazine, author Alyssa Shaffer has worked with dozens of celebrity exercise gurus, and she's assembled the best and most-respected to divulge their secrets in The A-List Workout. In additio to being a certified personal trainer by the American Council on Exercise, Shaffer is an award-winning freelance writer and has contributed health and fitness articles to Family Circle, Ladies' Home Journal, Health, Redbook, Tennis, Men's Health, Biography, and Cooking Light. Read More Read Less