James Rethaber discusses Cardio Machines with GQ

When it comes to cardiovascular fitness, not all machines are created equal. A recent GQ article broke down the best cardio machines based on workout goals—whether you’re looking to build endurance, improve speed, or torch calories. GQ spoke with James Rethaber, Ph.D., board-certified professional ergonomist and Vice President of Technical Operations at Fit For Work, to gain expert insights into how movement impacts performance, recovery, and long-term health. 

Finding the Right Cardio Machine for Your Goals 

The GQ article highlights how different machines serve different purposes: 

  • Treadmill – Best for running enthusiasts and those focused on endurance. 
  • Rowing Machine – A full-body workout that builds strength and cardiovascular health. 
  • Elliptical – A lower-impact option for those recovering from injuries. 
  • Stair Climber – A powerhouse for lower-body endurance and calorie burn. 
  • Stationary Bike – Great for joint-friendly cardio and interval training. 

Dr. Rethaber emphasized the importance of ergonomics and movement efficiency when selecting a cardio machine, like the under-desk treadmill. Even at a leisurely pace, Rethaber says that regular walking can help reduce the pain, stiffness, and soreness that comes with sitting for too long. 

A Smarter Approach to Cardio 

Cardio isn’t just about breaking a sweat—it’s about longevity, functionality, and performance. The right machine, combined with evidence-based movement strategies, can help you stay stronger, longer. Whether you’re an athlete, a weekend warrior, or someone looking to improve workplace wellness, the key is sustainable movement that supports your body’s needs. 

Read the entire article on GQ: https://www.gq.com/story/best-cardio-machine-every-type-of-workout