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ACE Fitness Expert Profiles

Meet our ACE Fitness experts!

Lawrence Biscontini

Lawrence Biscontini

Lawrence Biscontini, M.A.

Lawrence Biscontini, M.A., creates award-winning group fitness and personal training programming at an international level for clubs and spas, including Equinox, 24 Hour Fitness, Gold's Gym International, Bally and Golden Door Spas. As Nutritional Counselor, Biscontini has created complete nutritional menus for spas from Manhattan to Mykonos. He regularly contributes to fitness industry publications, such as AFAA's American Fitness Magazine, IDEA Fitness Journal and Spa Asia. His books include, Cream Rises: Excellence in Private & Group Education, and he dedicates a percentage of his website sales charity, as well as to inspire career wellness development. As a movement specialist, Biscontini trains celebrity clients, including cast members of ABC TV's soap opera "General Hospital," and has made appearances on CNN Headline News and LIVE! With Regis and Kelly.
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Cedric Bryant

Cedric Bryant

Cedric X. Bryant, Ph.D., FACSM--Chief Science Officer

Cedric X. Bryant, Ph.D., FACSM, is Chief Science Officer for the American Council on Exercise and represents ACE as a national and international lecturer, writer and expert source. Bryant has written more than 250 articles or columns in fitness trade magazines, as well sports medicine and exercise science journals, and authored, co-authored or edited 30 books. He can often be found as an authoritative resource for fitness and nutrition articles in a variety of respected national outlets including USA Today, Washington Post, The New York Times, Parade, Wall Street Journal, Time, Newsweek, Reader’s Digest, Consumer Reports, Fox News, CNN Headline News and more. Bryant has held a position on the exercise science faculties at several prestigious institutions, including the United States Military Academy at West Point and Pennsylvania State University, and earned both his doctorate in physiology and master’s degree in exercise science from Pennsylvania State University.
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Natalie Digate Muth

Natalie Digate Muth

Natalie Digate Muth, MD, MPH, RD, FAAP

Natalie Digate Muth, MD, MPH, RD, FAAP is the Healthcare Solutions Director for the American Council on Exercise, a board-certified pediatrician and Fellow of the American Academy of Pediatrics, a Diplomat of the American Board of Obesity Medicine, registered dietitian and board-certified specialist in sports dietetics, and ACE-certified health coach. She is the author of "Eat Your Vegetables" and Other Mistakes Parents Make: Redefining How to Raise Healthy Eaters" and the upcoming textbook "Sports Nutrition for Health Professionals". She has been ACE certified since 1998.
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Shannon Fable

Shannon Fable

Shannon Fable

Shannon Fable, 2009 & 2012 IDEA Instructor of the Year Finalist and 2006 ACE Instructor of the Year, is the founder of SFR, a consulting firm for aspiring fitness educators, manufacturers and managers, as well as the owner of Balletone® and GroupEx Pro®. Shannon is a 15 year fitness veteran, freelance writer, as well as an international presenter for Schwinn®, BOSU, ACE and Power Systems. She serves on the ACE Industry Advisory Panel, has helped author portions of the ACE and ACSM Group Fitness manuals, and has starred in over 25 fitness videos. Currently, she is the senior director for APD’s and presenters for Powder Blue Productions and serves as the primary consultant on small group exercise programming for Anytime Fitness.
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Todd Galati

Todd Galati

Todd Galati, M.A.

Todd Galati, M.A., is the Director of Credentialing for the American Council on Exercise. He holds a master’s degree in kinesiology, a bachelor’s degree in athletic training, and all four ACE certifications. Galati’s experience includes directing youth fitness programs focused on reducing obesity, cardiovascular disease, and type 2 diabetes at the UC San Diego School of Medicine, teaching courses in biomechanics, applied kinesiology, and anatomy at Cal State San Marcos and San Diego State University, conducting human performance studies as a research physiologist with the U.S. Navy, personal training in medical, nonprofit, and commercial facilities, and coaching endurance athletes to state and national championships and other goals once felt to be out of reach.
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Jessica Matthews

Jessica Matthews

Jessica Matthews, MS, E-RYT

Jessica is an exercise physiologist and Senior Health and Fitness Editor for the American Council on Exercise, a fitness blogger for Weight Watchers, Fitbie and Shape magazine, and a regular contributor to numerous publications including CNN, USA Today, and Oprah.com. She also serves as an adjunct professor at MiraCosta College, where she leads courses in the Department of Kinesiology, Health and Nutrition. Jessica holds a bachelor’s degree in physical education teacher education from Coastal Carolina University, a master’s degree in physical education from Canisius College, as well as three ACE certifications (Personal Trainer, Group Fitness Instructor and Health Coach). A long-time lover of yoga, she is also an Experienced Registered Yoga Teacher (E-RYT) through Yoga Alliance. Follow her on Twitter at @fitexpertjess.
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Sabrena Merrill

Sabrena Merrill

Sabrena Merrill

Sabrena Merrill, M.S., is an exercise physiologist and ACE Education Content Development Expert. A 20-year veteran of the fitness industry, she is a Level 1 certified CrossFit Coach as well as an ACE-certified Personal Trainer, Health Coach and Group Fitness Instructor. Sabrena holds a bachelor’s degree in physical education (sport science) as well as a master’s degree in physical education/biomechanics from the University of Kansas. A former full-time faculty member in the Kinesiology and Physical Education Department at California State University, Long Beach, Sabrena has a passion for educating others about current fitness topics as evidenced through her work developing curriculum for continuing education programs, writing for fitness-related publications, creating educational videos and speaking to fitness professionals at conferences and workshops nationwide.
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Jacqueline Ratliff

Jacqueline Ratliff

Jacqueline Ratliff, MS, CSCS

Jacque Ratliff, MS, CSCS, is an ACE exercise physiologist and education specialist with more than 11 years of personal training experience. Ratliff grew up in the fitness industry through participation in YMCA sports and began teaching gymnastics and swimming at a young age. She has traveled the country for both work and school, completing her bachelor’s degree in kinesiology from Kansas State University and master’s degree in sport and exercise science from Florida International University. Her work as a personal trainer, group fitness instructor, NSCA strength-and-conditioning coach, and endurance coach led her to begin teaching for post-secondary educational institutions in allied health and holistic wellness. She is a published content writer for USATriathlon and was a member of the KSU women’s varsity rowing team. Ratliff has also competed in multiple triathlons in Kansas, Washington, Florida and California, and as a National Physique Committee competitor.
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Jonathan Ross

Jonathan Ross

Jonathan Ross

Jonathan Ross is the two-time recipient of Personal Trainer of the Year awards (2010 IDEA & 2006 ACE), has served as Discovery Health Fitness Expert and hosted the Discovery Health series “Everyday Fitness.” His book, Abs Revealed, delivers a modern, intelligent approach to ab training, and his business, Aion Fitness, delivers exceptional fitness training,speaking, and writing services. Ross is a master trainer for TRX and has shared his renowned thought-leadership philosophy at many conferences and in the media.
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Anthony Wall

Anthony Wall

Anthony Wall

Anthony Wall, M.S., is the Director of Professional Education for the American Council on Exercise with more than 20 years’ experience in the fitness industry. Prior to joining ACE, he served as Program Director for Les Mills BOOTCAMP®, Les Mills LOOK BETTER NAKED® and Les Mills SPARTAN™. During his tenure with Les Mills New Zealand, he was responsible for the development and training of their personal trainers and “Team Training” instructors, and was instrumental in implementing small group training programs across the country. Anthony earned his master’s degree in exercise physiology from San Diego State University, and holds C.H.E.K. Nutrition & Lifestyle Coach (level 1), TRX STC and IKFF CKT Kettle Bell Certifications. He has worked in the U.S., Australia, New Zealand and Asia, and currently presents on topics in fitness and personal branding.
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