Irv Rubenstein, Ph.D. in exercise physiology (Peabody-Vanderbilt, 1988), is the founder and president of STEPS Fitness, Nashville’s first personal training center founded in 1989. 

Dr. Irv is certified by the American Council on Exercise - CPT, National Strength & Conditioning Association - CSCS, National Strength & Conditioning Association - CSPS, National Strength & Conditioning Association - CPT, American College of Sports Medicine - EP and the American Academy of Health and Fitness Professionals - Post-Rehab Specialist.

He is often cited in print and on-line 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” and has created several ‘kits’ for VHI. 

Dr. Irv served on the NSCA committee to develop a new certification for trainers working with special populations (NSCA-CSPS). He has provided continuing education for fitness professionals with Exercise ETC for over 18 years, was a founding member of the Eating Disorders Coalition of TN (now known as Renewed Support), and has presented at major conferences on exercise and anorexia, arthritis and exercise, and the scientific challenges of weight loss. 

Dr. Irv has collaborated with FitFixNow to create and present on-line lectures about joint replacements and what causes and how to work with common fitness-related injuries. You can follow his wellness and fitness ramblings at