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Irv Rubenstein, Ph.D. in exercise physiology (Peabody-Vanderbilt,1988) and certified personal trainer, is the founder and president of S.T.E.P.S., Inc., Nashville’s first personal training center. Dr. Irv is often cited in print and online publications as a reliable resource for scientific explanations of fitness myths, functional training, and proper exercise technique. He has contributed to books and written articles about personal training and edited the Visual Health Information five-book series, Exercise Ideas. He currently serves on the NSCA committee to develop a new certification for trainers working with special populations. He has provided continuing education for fitness professionals with Exercise ETC for over 15 years, was a founding member of the Eating Disorders Coalition of Tennessee and has presented at major conferences on exercise and anorexia, arthritis and exercise, and the scientific challenges of weight loss.