Roger Fielding is an Associate Professor of Health Sciences and serves as director of the Human Physiology Laboratory at Boston University. His research focuses on impact of exercise on human aging. He also holds an adjunct appointment at the Jean Mayer USDA Human Nutrition Research Centre on Aging at Tufts University.

Wayne Westcott is fitness research director at the South Shore YMCA in Quincy, MA. He is strength training consultant for numerous national organizations, such as the American Council on Exercise, the American Senior Fitness Association, and the National Youth Sports Safety Foundation, and editorial advisor for many publications. He is also author of several fitness books including the new release, Building Strength and Stamina, Strength Training Past 50, etc.

Dr. David Hannaford is a board certified Sports Podiatrist with a focus on running injuries. His practice is limited to sports injury patients. He has been practicing for 19 years. He treats Olympic and professional athletes as well as amateur. He is the team Podiatrist for many teams and track clubs including the Leukemia and Lymphoma Society Team in Training, Joints in Motion of the Arthritus Foundation, the Galloway Marathon Training Group and most recently the Aids Foundation Marathon Training Program.

Personally he has been an avid runner for 29 years. His running credits include a 2:39 marathon, a 33:50 10K, 2 silver buckles at the Western States 100 mile ultramarathon, and was the Pacific association USA Track and Field Ultramarathon masters champion in 1995.

Akiko Aoyagi Shurtleff is an author/illustrator of several pioneering soyfood cookbooks including the best-selling The Book of Tofu, which has sold over 500,000 copies. She also co-authored and illustrated The Book of Miso, The Book of Tempeh, and other non-cookbooks. She was one of the co-founders and co-directors of Soyfoods Center, Lafayette, California, and has lectured and given numerous cooking classes on soyfoods over the years. Currently, Akiko has her own illustration and graphic design business in Walnut Creek, California. Besides her award-winning illustrations and providing world class expertise on soyfoods, Akiko proudly claims fame as Kazuko's older sister.