secret weapon

Building muscle since the 1960's Back in the early 1960's a German Athlete and Body Builder named Gert F Koelbel, invented an exercise device called the Tensolator which later on was rebranded the Bullworker.

This device was based on using the principles of Isometrics or Static Contraction. 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 Greatest n the "Greatest" Muhammad Ali used the exerciser and became one of their spokes model. Our current Governor of California Arnold "The Terminator" Schwarzenegger also used and modeled for the Bullworker.