With X3, you train with GreaterForce to trigger Greater Gains
All you need to build muscle and burn fat is 10 minutes, an X3, and a 3x4 foot workout space.
Over 7,000 5-star reviews from 300,000 people who have switched from weights to X3.
X3 Was Featured In:
Variable Resistance Training System
X3 Fatigues Muscle Faster Than Weights
Weights overload joints and underload muscles, limiting muscle growth. Now, there’s a better way.
With variable resistance training and X3, you mirror your body’s natural strength curve: higher forces in your strong range and lighter forces in the weak range.
Variable resistance is the most effective way to build muscle, and X3 is the most powerful and effective variable resistance training system created.
- More resistance where your body is stronger
- Complete muscle fatigue for greater muscle gains
- Over 600 pounds of available force
- Full-body muscle-building workouts
- Less risk of injury than traditional weights
About the Inventor
John Jaquish, PhD, is a Wall Street Journal best-selling author of Weightlifting Is a Waste of Time. He is the inventor of OsteoStrong, a bone-density-building medical device that has reversed osteoporosis for thousands and created more powerful, fracture-resistant athletes across 300 clinics worldwide.
While researching bone density, Dr. John Jaquish discovered a sevenfold difference between the weakest and strongest ranges in weight lifting. The discovery led to the invention of X3, the ultimate muscle-building system.
Dr. Jaquish’s latest invention, X3 Force, adds real-time force tracking and data-driven workouts to X3’s proven variable resistance training methodology.
Dr. Jaquish is also a research professor and a nominee for the National Medal of Science.
Dr. John Jaquish’s 365-Day Transformation
Like many others, Dr. Jaquish spent hours in the gym every week to look moderately fit.
Eventually, he developed a better way of working out after years of injuries and frustration.
In two years, he put on over 45 pounds of muscle simply by training with the X3 system, supplementing his protein intake with Fortagen, and streamlining his diet.
Train Like an Athlete
Trusted by the World’s Best Athletes
Weight lifting causes joint damage and limits strength-building potential. For many elite professional athletes and championship teams, the injury risk is too high—and the returns are too low.
More and more athletes are turning to X3 to build muscle and increase strength. It’s the workout system of choice for football great Terrell Owens, MMA legend Forrest Griffin, and the NBA’s Miami Heat.
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
Terrell Owens
NFL Hall of Fame
Adam Von Rothfelder
MMA
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
An All-in-One Home Gym
X3 Bar – This Olympic-style bar, made of machined anodized aluminum, has internal bearings to optimize grip, a solid steel center shaft, and stainless steel hooks, allowing you to lift over 600 pounds of force.
Upgrade your X3 Elite to X3 Force to measure your real-time force under variable tension and repetitions, offering a precise view of your exercise performance.
- Custom Engineered Resistance Bands – Includes heavy-duty resistance bands made with 15 latex layers, which can provide over 600 pounds of resistance.
- Heavy Duty Steel Ground Plate – Protects your ankles from high forces produced by X3.
- Exclusive Access to the X3 12-Week Program – With detailed videos covering all aspects of the X3 12-Week Program, you can master each exercise movement to get the most from variable resistance training.
X3 12-Week Workout Program
- Guidance on exercise form and technique
- Simple methods for accelerated strength and muscle building
- Science backed tips on when to exercise and when to rest
- Nutrition programs focused on Muscle Gain, Fat Loss, or for Vegetarians/Vegans
- Help from tens of thousands of X3 users in the X3 Facebook communities
- Optional hypertrophy program focused more on muscle size and bulking
The Ultimate Solution for Maximizing Muscle and Minimizing Body Fat
X3 | Free Weights | Resistance Band Packages | Tempo | Tonal | Digital Dumbbells/ Kettlebells | Other "Smart" Gyms | |
---|---|---|---|---|---|---|---|
10-Minute Workout | |||||||
Joint Friendly | |||||||
600+ pounds of resistance | * | ||||||
Portable | |||||||
Measure Real-time Force | * | ||||||
Data-driven workouts | * | ||||||
X3 Bar Results
X3 Bar Results: Before and After
Measure Your Real-Time Force by Upgrading X3 to X3 Force
- View real-time force data across different rep cadences
- Improve rep consistency
- Compete against your previous Total Force
Maximize Your Muscle Growth With X3 Force
- Real-time Force Tracking
- X3 Force measures your real-time time under variable tension and repetitions, offering a comprehensive view of your exercise performance.
- Total Force Rating
- Your ultimate performance metric, calculated by combining force sensor data with time and rep count information. It will help you quantify exercise difficulty and quality to watch your progress.
- Data-driven workouts
- With X3 Force, you'll access data-driven workouts that empower you to push your limits and achieve superior results. Each session will help you compete with your previous Total Force, ensuring you're always stimulating more growth.
- Measure Your Progress
- By improving your Total Force for each exercise you'll confirm that you are maximizing your results and getting the most out of your time spent working out.
A smarter way to train
Watch Your Strength Grow
Connect to your phone or tablet
The X3 Force App works with iOS and Android devices, including streaming to Apple TV.
Quantify overall workout quality
Prioritizing enhancements in your Total Force for every exercise is a surefire method to verify that you're achieving peak results and staying true to the proven X3 approach.
Track individual exercise momentum
Closely track your journey and witness your steady improvement over time with the ability to review your progress in specific exercises ensuring you're on the path to achieving your fitness goals.
Monitor your progress
Watch your strength increase faster than you ever thought possible with your data in the X3 Force app.
X3® Elite
Build muscle faster with the X3 Bar Elite home gym. X3 uses variable resistance to drive tremendous strength gains without damaging joints.
- Greater strength and muscle gains in just 10 minutes a day
- Complete home gym system with over 600 pounds of available force
- Easy to follow X3 12-Week Program, proven to help you grow muscle faster than free weights