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Fred Hahn


Manhattan, NYC


SlowBurn Personal Training Studios

About me

Fred has been involved with exercise ever since he became a member of The Charles Atlas Club when he was 10 years old. He began training clients in the early 1980s at several of NYC’s leading health clubs, including the Equinox and New York Health and Racquet Club.

He began developing his Slow Burn system as a physical therapy aide at the Hospital for Joint Diseases Sports Medicine Center in NYC. In 1994, along with one of New York’s leading orthopedic surgeon’s he co-founded and directed Metro Sportsmed, a private physical therapy clinic located at New York Methodist Hospital in Brooklyn, New York which now has multiple locations throughout the NYC area.

In June of 1998, Fred founded and established Serious Strength Inc., a Slow Burn personal training and rehabilitative exercise center in NYC. His clients include top CEOs, celebrities, bestselling authors, journalists and TV personalities including Tony Robbins, Cynthia Nixon.

In an effort to provide the best nutritional guidance possible for his clients, Fred initiated an intellectual partnership with the authors of the New York Times bestselling book Protein Power, Drs. Michael and Mary Dan Eades and together authored The Slow Burn Fitness Revolution (Jan. 2003, Random House/Broadway Books). It is one of the best-selling fitness books in Random House history and has been translated into four languages. His second book Strong Kids Healthy Kids (AMACOM 2008) teaches people that weight lifting is a safe and powerfully effective exercise modality for children. The book also includes dietary information on why the authorities food plate and pyramid are unscientific, and teaches people how to eat healthfully by eating real food that is low in sugar and high in fat.

Fred has appeared on the NBC’s The Today Show, CNN’s The Biz, WABC Morning Show, NBC Live at Five, Fox Five News, The 700 Club, ABC Eyewitness News and many more such venues. He has been interviewed by the New York Times, the Washington Post and appears on many radio shows and podcasts around the world, including National Public Radio, WFAN, Livin La Vida Low Carb, and many more.

Fred has lectured extensively on exercise including Princeton University, New Jersey University, Chelsea Piers, Hospital for Joint Diseases, Mt. Sinai Hospital,  Jimmy Moore’s Low Carb Cruise, as well as abroad. He was a senior staff writer for Women’s Basketball Magazine, a blogger for the Huffington Post (until Dr. Dean Ornish dismissed him for writing pro-low carb blogs) and has his articles published in numerous fitness publications. He studied at Castleton State College and Long Island University and has an impressive continuing education resume.

Fred is a board member of the Nutrition and Metabolism Society. He is professionally certified by the American Council on Exercise. He lives in NYC with his wife and two children.


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