Typically, when you see a muscular guy promoting a fitness product, they’re just
a model who has been hired to read a script.
Or maybe someone who is already in excellent physical condition decides to
monetize their fitness. They white label a supplement or start selling some
weight training equipment, because they realize they can be their own
advertisement. Through hard work and grueling hours at the gym, they built an
aesthetic and now they want to leverage it to sell some arbitrary product.
The situation with Dr. Jaquish is a little bit different.
Who is Dr. John Jaquish? #
Dr. Jaquish isn’t being paid by someone else to rep X3 bar
. And Dr.
Jaquish didn’t have his physique prior to inventing X3 bar
Rather, he is able to represent X3 bar
precisely because of the
benefits that he personally received from his own use of X3 bar
The story here isn’t about a man who had endless time to spend at the gym, or
who had some natural aptitude for building muscle. This is about American
ingenuity and invention.
Dr. Jaquish wasn’t pleased with the minimal returns he saw from working out for
long periods of time with conventional strength training equipment. And as a
medical device engineer it seemed odd to him that weight lifting options haven’t
really changed in 50 years, despite lots of new scientific findings.
The scientific quest for efficiency with results #
When he looked at existing literature, Dr. Jaquish became convinced that the key
to exercise that is faster and more effective than weight lifting would be
That is, the amount of force the exercise device applies to muscles must change
as you move through the workout. In fact, it should change a lot. A 7X
difference between the lowest force applied to the muscle and the highest force
applied to the muscle appears about optimal.
Upon consideration of the challenge, it seemed that band training could have
been the solution. As you stretch a band, the force can go from 1X to 7X or
more. At this point, Dr. Jaquish was already imagining that he would write a
book about band training as an alternative to weight lifting. But when he
finally found bands that offered the right amount of elasticity, force
production, and resistance to snapping, he also found that they were totally
Dr. Jaquish tried to perform exercises by gripping the bands directly or
standing on them, but when the bands were this powerful, he got injuries rather
than gains. Lighter weight bands weren’t an option, because they provided far
less muscular stimulus even than weight lifting, which Dr. Jaquish hoped to
Discovering and prototyping the X3 Bar design #
Then it dawned on him. You wouldn’t perform a bench press by grabbing a handful
of plates and lying on the ground. Just like regular iron plates need a bench
and barbells to be useful for regular weight lifting, the ultra-heavy bands were
useless without supporting equipment.
Fortunately for him, Dr. Jaquish already directed a medical device company. He
brought the problem to the biomedical engineers and within weeks the needed
resistance band bar assembly and ground plate had been designed and a prototype
After using that prototype for a year, Dr. Jaquish had gained 30lbs of muscle
and decreased his body fat percentage. A level of improvement that had never
been possible in the years he previously spent weight lifting.
Having seen such great benefits personally, Dr. Jaquish decided to diverge
slightly from his area of expertise in the medical field, and bring this
invention to market himself as the product
X3 Bar variable resistance system