Bullworker Fake or Muscle Builder

It seems the Internet is buzzing with people asking “does the Bullworker really work or is it a fake? “

Read this article and discover why this proven isometric exerciser is making a comeback!

Back in the late 1960’s a German inventor named Gert F Kolbel, or Gert Kobel (I have seen many different spellings of his name) invented an exercise device called the Tensolator, later on it was renamed the Bullworker.

The device was revolutionary in that it allowed you to use the Bullworker like a set of cables and at the same time, you could compress it like an accordion. It seemed like the perfect all in one exercise device.

The results were mind blowing for it’s time, after all this was “Pre-ARNOLD” and of course before Steroids!

This piece of isometric training equipment was based on using the principles of a newly discovered, scientifically tested, training method called “Isometrics or Static Contraction.”

The Discovery Of Isometric Exercises

Bullworker alternative Bully Xtreme

The basic principle of isometric exercises was discovered back in the ’20s, when scientists found that when one leg of a frog which was tied down over a period of time “Grew Significantly Stronger” than the leg left free.

However, it was not until 1953 that two German doctors (Dr. Hettinger and Dr. Muller) at the Max Plank Institute in Munich, Germany, worked out the implications of this experiment and applied them to the human body.

Traditional exercise, known as “isotonic,” beefs up a muscle by moving it. Isometric exercise, on the other hand, does not move the muscle at all; the exercises are all performed against an immovable object. However, this “static contraction” was proven through the studies to increased strength more quickly than traditional exercises doing repetitions.

Isometrics strengthens the muscle at the tendon level as well at the muscle!

Bullworker Isometric Exercises Are Scientifically Proven to Get Results

By this immobile contraction, nearly 100% of the muscle’s thousands of hair like fibers are stimulated—as compared with the mere 50% to 60% involved in isotonic exercise. In fact: results from the studies done at the Max Planck Institute using this form of training had resulted in strength gains of at least 300% over the other test groups.

Because of the unique ability of this new exerciser the Bullworker, to exercise muscles at many different angles and combined with the scientifically proven Isometric training method…

Bullworker sales took off like a turbo charged skyrocket, reaching sales of 4 million by the middle of the 1980’s. What’s remarkable about this is that they never used T.V. advertising. The Bullworker was mostly sold from ads in comic books, some wrestling and bodybuilding magazines.

The product moved based on word of mouth and soon some of the world’s best know athletes, movie stars and power lifters jumped on board the “Bullworker” train. Including…

Bullworker – The Greatest Isometric Exercise Equipment

Muhammad Ali used the exerciser and became one of their spokes model. The former Governor of California Arnold “The Terminator” Schwarzenegger also used and modeled for the Bullworker as well as many others including Bruce Lee, and David “Dave” Prowse, of “Darth Vader” fame just to name a few.


Isometric exercise also caught on and many Football teams added Isometric exercise to their training program… the most notable of it’s time– the Green Bay Packers under Coach Vince Lombardi.

Articles soon appeared all over the place including Time Magazine, the article was called” Without Moving a Muscle.” Isometrics became the buzzword in the fitness industry. Soon high school and college athletes had access to the isometric training protocols. In fact, many Olympic teams throughout the world began incorporating ISO’s into their workout routines.

Isometrics Creates Olympic Hopes

The German Olympic Power Lifting team of that time began training with the Bullworker as an adjunct to their weightlifting and some feel that the incredible results and medals they achieved was mostly due to their Bullworker training.

The most visible proponent of the Bullworker was actually Bruce Lee.

Who at that time was a weight-training fanatic, until he injured his body doing an exercise called “Good Mornings.” After the injury, Bruce Lee looked into every form of exercise and became an “Isometric nut” incorporating Isometric training into all his workouts.

The One Exercise You Should Never Do!

You don’t know what a “good morning” is, let me describe the movement. Take a barbell and place it behind your neck and then bend forward from the waist to till your head is at approximately waist high. Today no one should do that exercise since it has been recognized as a very dangerous exercise.

So why haven’t you heard of this portable muscle building miracle?

Well even thou Bob Hoffman and many of the U.S. Olympic Power lifting were using the principles of Isometrics and achieved many wins. Isometrics fell into disfavor. This is common in the fitness community. It seems we’re always on to the next fad or novelty.

Today Isometrics, which is one of the few training methods that actually was backed by science (Muller, Hettinger Isometric Studies), has made a resurgence and so has the Bullworker.

Redesigned and Re-Created for the 21st Century

Since the patent for the Bullworker ran out several years ago and perhaps resurgence due to baby boomers getting older… a new “hybrid” Bullworker alternative has recently emerged. It’s called the Bully Extreme Home Gym and it offers all the features of the old Bullworker models, ISO7X and then some. However, please bear in mind that the Bully Xtreme is not a Bullworker steel bow, Bullworker classic or Bullworker X5.

In fact, the Bully Xtreme in its latest version incorporates many of the features of the Bullworker X5 however instead of using an expensive plastic it uses steel and instead of cheap straps made of cloth – it uses steel cables that are almost impossible to break.

Frank Sherrill the original creator of the Bully Xtreme, took the old patent and as so many people in history have done, improved on its original design. Bringing the “old” design into the 22nd century. As Frank Sherrill recently said “It’s a shame that the Bullworker design had not been improved on… in almost 27 years, I felt it needed a new look and more resistance so I created my own “Bullworker alternative” the Bully Extreme.

I wanted something I would be proud of and I could stand behind with a… LIFETIME Warranty!”

Of course since the discovery of Isometrics over 40 something years ago, there has been much more learned regarding the proper way to build Lean muscle mass.

The old Bullworker model only allowed for about 28 exercises, but Mr. Sherrill’s radical design has increased the number of exercises to over 82, allowing for more versatility and variety in training. His main idea as he stated it…”make it fun to workout, otherwise people won’t do it.”

Over 29 Different Exercises Can Be Done In a Seated Position, But You Only Need 7 To Hit 300 Of the 500 Muscles In Your Body!

This has made the Bully Extreme a very popular home gym for people that are incapable due to injury, disability or distance to finally get a an incredible muscle building workout in their home. Mr. Sherrill felt that this was very important since many of his wartime friends had lost the use of their legs and where just wasting away in their wheel chairs. In fact, Mr. Sherrill often donates several Bully’s to the local VA.

As incredible as it seems this old exerciser; now reborn, gets the job done. Go ahead and give the Bullworker or any of its alternatives a try.


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