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.

Fred began developing his Slow Burn system as a physical therapy aide at the Hospital for Joint Diseases Sports Medicine Center in NYC. In 1994, Fred, along with one of New York’s leading orthopedic surgeon’s co-founded a private physical therapy clinic located at New York Methodist Hospital in Brooklyn New York. As Director of clinical exercise, Fred ran the clinic until 1996.

In June of 1998, after nearly 10 years of continuous refinements and application, Fred founded and established Serious Strength, a Slow Burn personal training and rehabilitative exercise center in NYC. His clients include CEO’s of some of the country’s largest corporations, famous actors, writers, journalists and TV personalities.

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). It is currently in its ninth printing and is one of the best selling fitness books in Random House history. His new book Strong Kids Healthy Kids teaches parents and their children how to lift weights safely and eat healthfully.

Fred has appeared on the NBC’s The Today Show, CNN’s The Biz, WABC Morning Show, NBC Live at Five, Fox Five News, ABC Eyewitness News and more. He has been interviewed by the New York Times and the Washington Post and appears on radio shows around the country, including National Public Radio and WFAN in New York City, and many more.

Fred has lectured extensively on exercise including Princeton University, Chelsea Piers, Hospital for Joint Diseases, Mt. Sinai Hospital as well as abroad. He was a senior staff writer for Women’s Basketball Magazine and has his articles published in numerous fitness publications. He studied at Castleton State College and Long Island University and has an extensive continuing education resume.

Fred is also a board member of the Nutrition and Metabolism Society. He is professionally certified by the American Council on Exercise as a personal trainer since 1993.

Blog Entries by Fred Hahn

Sugar, Sugar.

Posted September 21, 2009 | 11:42 AM (EST)


A recent article in the New York Times discussed the idea of placing taxes on sugary beverages in an effort to curb obesity. While it is true that increased sugar consumption is by far the fastest and quite frankly, the only way to become obese, what's next? A fat...

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How Do We Become Fat?

12 Comments | Posted August 3, 2009 | 02:47 PM (EST)


Listening to Leonard Lopate's show Please Explain on WNYC last Friday, I was struck dumb by some of the information his two guests -- Dr. Louis Aronne Clinical Professor of Medicine at Weill-Cornell Medical College-NY Presbyterian Hospital and Director of the Comprehensive Weight Control Program and Dr. Kelly Brownell...

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Wheaties - Breakfast of Champions or Just Sea Monkeys?

6 Comments | Posted July 26, 2009 | 09:59 PM (EST)


Marketing can be awesomely powerful.

A good marketer could sell catnip to a dog if need be. We've all been hoodwinked into buying some sort of product at one time or another in our lives that turned out to be a dud or a downright lie. Sea Monkeys...

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NYC Fitness Gram

1 Comments | Posted June 23, 2009 | 03:53 PM (EST)


My eldest daughter received her NYC Fitness Gram the other day. The Fitness Gram details her BMI, muscle strength, endurance, flexibility and aerobic fitness levels. It is sanctioned by the NYC Dept. of Education.

I realize that these tests are designed and created to asses the general health and...

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Mayo Misinformation

1 Comments | Posted May 5, 2009 | 09:51 PM (EST)


A new client of ours whose 12-year-old son has been battling obesity sent me a link to the Mayo Clinic position stand on low-carbohydrate diets. It is written by two nurses who clearly have not educated themselves on the facts surrounding low-carbohydrate diets. These are the sorts of position...

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Strong Kids Healthy Kids on the Dr. Oz Show

Posted April 5, 2009 | 08:55 PM (EST)


Yesterday on Oprah and Friends radio show, Dr. Oz discussed my book Strong Kids Healthy Kids.

2009-04-02-strongkidscover.jpg

What was not discussed, to my great chagrin, was the issue of diet and obesity.

This issue is of great concern to me,...

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The Fallacy of the Balanced Diet

Posted March 25, 2009 | 02:02 PM (EST)


People seem to be obsessed with balancing things.

As we all know, the word 'balanced' means stable, equal, correct, proportional.

We like balance.

Balance is especially good when it comes to car tires, the use of a see-saw, walking a tightrope or your stereo speakers.

But...

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New Diet Study Reveals that Research Studies Mislead

Posted March 10, 2009 | 05:13 PM (EST)


A new study (pdf) published on February 26th in the prestigious New England Journal of Medicine conducted by Harvard scientist Dr. Frank Sacks and colleagues suggests that all diets, regardless of macronutrient content (fat, protein and carbohydrate) result in equal amounts of weight loss.

This is not particularly...

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Children and Type II Diabetes

Posted March 2, 2009 | 08:09 AM (EST)


It is almost common knowledge these days that many of our children - some experts say as many as 1 in 20 - suffer from obesity and type II diabetes. Those that have sidestepped these conditions but who engage in the same behavior as the ones who suffer are only...

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