What I Learned After 20 Years in Fitness


In this episode of the Simple Science Podcast with Dr Mike Axler, I dive into my journey through the world of fitness and performance. I share how it all started back in 2005 when I earned my NSCA-CSCS certification, began working as a personal trainer, and eventually made the leap into both in-person and online coaching.

I talk about what it was like transitioning from mechanical engineering to exercise physiology, and how I learned to bridge the gap between academic theory and real-world coaching.

We also get into some of my favorite topics—metabolic flexibility, high-protein diets for body recomposition and performance, and how to tailor science to fit each client’s unique context.

Over the years, I’ve had the privilege of working with everyone from elite athletes to everyday clients, and I share what I’ve learned about coaching philosophy, behavior change, and long-term success.

And because life isn’t all lab work and lifting, I even talk about a few of my personal passions—like kiteboarding—and how those experiences shape how I think about movement, recovery, and adventure.

It’s a comprehensive conversation for anyone in the fitness or nutrition space who wants to connect the dots between science, performance, and real life.

What I Learned After 20 Years in Fitness << details here

In this episode:

  • 00:00 Introduction and Early Career
  • 02:37 Transition to Online Training
  • 03:14 Balancing Research and Practical Application
  • 06:53 Challenges in Research and Academia
  • 09:05 Personal Struggles and Discoveries
  • 11:18 Educational Journey and Career Decisions
  • 16:02 PhD Research and Variability Analysis
  • 18:43 Client Coaching and Variability in Training
  • 25:16 High-Level Athletes and Nutrition
  • 40:26 Metabolic Flexibility and Endurance Training
  • 46:03 Balancing Carbohydrates and Fat for Marathon Training
  • 46:49 Optimizing Training for Non-Professional Runners
  • 51:55 The Role of Zone Training in Endurance Sports
  • 55:00 The Importance of Setting Realistic Training Goals
  • 01:00:13 Creating Effective Fitness Certifications
  • 01:07:29 High Protein Diets for Muscle Gain and Recomposition
  • 01:19:32 Personal Fitness Goals and Kiteboarding Adventures
  • 01:26:12 Conclusion and Where to Find More Information

If you prefer to go straight to YouTube, go here:

What I Learned After 20 Years in Fitness << YouTube

Much love,
Dr Mike

_____________________

Mike T Nelson CISSN, CSCS, MSME, PhD
Associate Professor, Carrick Institute
Owner, Extreme Human Performance, LLC
Editorial Board Member, STRONG Fitness Mag

Mike T Nelson is a PhD and not a physician or registered dietitian. The contents of this email should not be taken as medical advice. It is not intended to diagnose, treat, cure, or prevent any health problem - nor is it intended to replace the advice of a physician. Always consult your physician or qualified health professional on any matters regarding your health.

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Dr Mike T Nelson

Creator of the Flex Diet Cert & Phys Flex Cert, CSCS, CISSN, Assoc Professor, kiteboarder, lifter of odd objects, metal music lover. >>>>Sign up to my daily FREE Fitness Insider newsletter below

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