Advancing Physical Medicine & Fitness

Jaquish Biomedical applies cutting-edge research in human physiology to build fitness and rehabilitation technology that outperforms conventional approaches.

X3, our flagship home gym system, is used by over 300,000 people worldwide to build muscle faster than traditional weight training.

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John Jaquish showing how to perform an X3 exercise with the Miami Heat
More Muscle. Less Time. No Gym. No Weights.

X3 HOME GYM

More Muscle. Less Time. No Gym. No Weights.

8555 reviews

Variable resistance puts more load where your muscles are strongest — driving complete fatigue and faster growth in 10–20 minutes per day.

  • Build muscle faster than traditional weight training
  • Full-body strength workouts in 10–20 minutes
  • 600+ lbs of resistance. 17 lbs to carry.
  • Easier on joints than weights
Build Your X3 Home Gym
Read the WSJ Best-Selling Book That Exposes the Failures of Fitness

WEIGHTLIFTING IS A WASTE OF TIME

Read the WSJ Best-Selling Book That Exposes the Failures of Fitness

3767 reviews

Dr. John Jaquish's Wall Street Journal best-selling book breaks down why conventional weight training limits results and what the science actually says about building muscle more effectively. The principles behind the book are the same ones that power X3.

Check Out the Book
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Westside Barbell X3 Training Academy

Westside Barbell is the most celebrated strength training facility in the world, behind countless powerlifting world records. They have built an optional training academy exclusively for X3 users who want elite-level programming without the weights.

The Protein Your Body Actually Uses

FORTAGEN

The Protein Your Body Actually Uses

Studies show the body utilizes only 18% of whey protein. Fortagen's precisely balanced essential amino acid formula achieves nearly 100% utilization — one 5-calorie serving delivers the usable protein equivalent of 8oz of steak.

  • Nearly 100% amino acid utilization vs. 18% for whey
  • One serving equals the usable protein of 8oz of steak
  • 5 calories per serving — won't break a fast
  • Fast-digesting
Learn More About Fortagen

Superior Bone Health Solutions

Dr. Jaquish's osteogenic loading research powers OsteoStrong, a bone strength network operating in over 200 locations across 14 countries. Tony Robbins has been a committed user and advocate for five years.

Recent Coverage

Hybrid Resistance  – July 21, 2025

Did Westside Barbell Sell Out To The X3 Bar?

Back with Dr. John Jaquish to talk about their new exclusive program and relationship with Westside Barbell to create the “Westside Barbell X3 Training Academy”. Is this the evolution of resistance band training or shift in the future of Westside Barbell? We'll break down the origins of the partnership, how...
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New York Post  – March 17, 2025

Here’s what happens to astronauts’ physical and mental health after months in space

After enduring nine months in microgravity, astronauts Butch Wilmore and Suni Williams are set to return to Earth, confronting significant physical and mental challenges. In this interview, biomedical engineer Dr. John Jaquish delves into the effects of prolonged space travel on bone density, muscle atrophy, cardiovascular health, and mental resilience....
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Fox News  – March 17, 2025

Stranded astronauts to face 'flexibility, strength' challenges upon return home, expert warns

Biomedical engineer Dr. John Jaquish and former NASA astronaut Jose Hernandez join 'America Reports' to discuss the physical challenges stranded NASA astronauts will reacclimate after returning to Earth.
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Unilad  – March 10, 2025

Doctor reveals the reality NASA astronauts stranded in space will face when they return

Sunita Williams and Barry ‘Butch’ Wilmore have been stranded in space since June last year. A doctor has detailed what the NASA astronauts stranded in space will face once they have finally returned to Earth.
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