
Grow Muscle
3x Faster
Than With Weights!!
You're 7 Times Stronger Than You Think You Are
Humans have vastly different capabilities of strength at different ranges of motion. With X3's patented technology you can safely train with the proper forces for every range of motion.
Invented by Dr. John Jaquish

Dr. John Jaquish Was Also Featured in








Trusted by Professional Athletes World Wide
Elite professional athletes depend on X3 as their primary strength and size building exercise, with additional skill and specialization training for their specific sports.

Akbar Gbaja-Biamila
NFL

Alex Anzalone
NFL

Andre Drummond
NBA

Cedric McMillan
IFBB Pro Bodybuilding

Dan Cristian
IFBB Pro Bodybuilding

Shawn Baker, MD
World Record Indoor Rowing

Forrest Griffin
Lt Heavyweight Champion & Hall of Fame MMA

Gadiel Micu
NPC Pro Bodybuilding

Jamal Hill
Professional Paralympic Swimming

Javon Leake
NFL

Joe Reed
NFL

Tom Mandich
MLB

Trevin Wade
NFL

Nick Hardwick
NFL

Steven Benedict
Professional Sprinter & Olympic Trials Qualifier

Andy Isabella
NFL

Jonas Forsburg
Swedish National Soccer

Juan Thornhill
NFL

Justin Kripps
Olympic Gold Medalist (Canadian Bobsled)

Kessia Mirellys
IFBB Pro Wellness

Kevin Bull
Professional Obstacle Athletics

Miami HEAT
NBA

Tracy Walker
NFL

Trevor Cypress
NPC Pro Bodybuilding

Will Harris
NFL

Wyatt Ray
NFL
Better than Free Weights. Better than Regular Resistance Bands.
X3![]() | Free | Resistance Bands![]() | |
---|---|---|---|
Relevant Loading for Strength Training | |||
High Level of Protection From Injury | |||
Can Be Used Anywhere | |||
Will Create the Highest Levels of Growth | |||
10 Mins Per Day for Max Effectiveness | |||
Unlock Your Potential With X3
X3 Bar Builds Muscle Gains 3x Faster Than Traditional Training
Compared to regular weight training, variable resistance training (such as X3) led to double or triple the gains in one-rep max, and triple the gains in average power, for the time period tested. But even that research didn’t scratch the surface of the fact that confirmed with bone research, humans are 7-times more powerful in the strong vs weak range. So now knowing this, we obviously need to massively increase force as we move into stronger ranges, you can’t do this with a weight, but X3 makes this happen.
This may be one of the most profound discoveries in the history of sports performance science.


People Quit on Fitness Because They Don't See Results in the Time They Can Commit.
The following will change the way you view exercise, FOREVER!
10 years ago, a scientist invented a medical device to grow bone density since his mother had low bone density and knew he could fix it.
The device fixed his mother's bone density as well as tens of thousands of others, but he made another big discovery. He saw that when people are in impact-ready positions, they were seven times stronger than what weights would allow at the gym. This means that when you lift weights you are overloading joints while under-loading muscle. Exactly why so many fail to see results.

This means that when you lift weights you are overloading joints while underloading muscle. Exactly why so many fail to see results. WHAT IF YOU COULD CHANGE THE WEIGHT AS YOU MOVE!?
He created some of the world's most powerful latex bands: 50-100 times the power of typical fitness bands. The only challenge was that these bands would injure wrists and ankles if used alone.
He then invented a powerful olympic bar and ground plate to protect joints and deliver massive variable power for RAPID GROWTH!
Dr. Jaquish, the scientist, gained 45 lbs of muscle and dropped 16 lbs of fat while creating the device.
Now he’s ready to share it with the world!
Welcome to X3

Included With X3
- X3 Elite Bar – Specially machined alloy steel bar with internal bearings, like an Olympic bar, so that the grip is always optimized
- Ground Plate – Heavy Duty Ground Plate Protects ankles from high forces produced by X3
- Custom Engineered Resistance Bands up to 600 lbs (272 kg). – Includes Extra-Light, Light, Medium, and Heavy. (600+ lb Elite Band sold separately) bands made from layered latex of exceptional thickness
- Engineered to support over 600 lbs (272 kg) of resistance

Also Included, 12-Week X3 Workout Program
Our Customers Love the X3 System!
About the Inventor
John Jaquish, PhD, is a Wall Street Journal Best Selling author and inventor of the most effective bone density building medical device, which has reversed osteoporosis for thousands and created more powerful and fracture resistant athletes.
His devices were put into production, and has since been placed in over 300 clinics worldwide. Osteogenic loading has now helped over 20,000 individuals with their bone health.
Dr. Jaquish also quantified the variance between power capacities from weak to strong ranges in weight lifting, which brought him to his second invention, X3. The research indicates that this product builds muscle much faster than conventional lifting, and does so in less training time, all with the lowest risk of joint injury.
Dr. Jaquish is a research professor at Rushmore University, speaks at scientific conferences all over the world, has been featured on many of the top health podcasts, is an editor of multiple medical journals, and is a nominee of the National Medal of Science.

From Left to Right: Dr. Jaquish's Actual Progression When Using Only the X3 Prototype for 1 Year


Social Media is Exploding With Enthusiasm for X3!