#443 Stefan Gehrig - From Studying Muscle Wasting Disorders to Making The Best Gym Bags In The World

#443 Stefan Gehrig - From Studying Muscle Wasting Disorders to Making The Best Gym Bags In The World

Author: Andrew Coates February 14, 2026 Duration: 34:42

Please enjoy this rare bonus Saturday episode with Stefan Gehrig, founder of KNKG - my favourite gym bag and duffel company.


Stefan also holds a PhD in Muscle Biology and worked in research studying muscle wasting disorders before pivoting into entrepreneurship. While he no longer works directly in academia, I didn’t want to miss the opportunity to ask valuable questions about his expertise in muscular dystrophy, sarcopenia, and other muscle-wasting conditions.


We also discuss the leap from research to building one of the most respected gym bag brands in the world - and what it takes to go all-in on a side hustle.


THIS EPISODE COVERS:


The story behind founding KNKG


Pivoting from academic research to entrepreneurship


What went into deciding to go all-in on a side hustle


What muscular dystrophy is and who is at risk


Other muscle wasting diseases and their individual and societal impact


How lifestyle affects muscle health and disease risk


Sarcopenia and age-related muscle loss


Why strength training matters for long-term health


Neurological conditions like ALS and MS and their connection to muscle wasting


Applying scientific thinking to business


And much more


We’ll both be at the Arnold Sports Festival March 6th and 7th at the KNKG booth — come say hello.


If you’d like to grab your own KNKG bag, DM me and I’ll send you my 15 percent discount code.


Instagram: @knkg


CHAPTERS


00:16 Meet Stefan Gehrig: KNKG founder, PhD, CrossFit Games athlete

01:09 How Andrew became a KNKG superfan (Arnold booth announcement)

02:23 KNKG’s origin story: from PhD research to building bags since 2011

04:09 From scientist to founder: CrossFit niche + The 4-Hour Workweek spark

05:30 Designing without experience: materials, factories, and manufacturing

06:21 What was missing in gym bags: organization, shoe compartments, function

08:02 The leap: leaving academia and going all-in on KNKG

10:22 Why it worked: timing, runway, and applying the scientific method to business

12:27 Arnold Sports Festival + 15% discount details

13:38 The 80/20 of KNKG: product development, word-of-mouth, long lead times

15:44 Muscular dystrophy explained (Duchenne, risks, treatments)

19:07 Staying current in research — and why science is all-consuming

20:28 Sarcopenia: age-related muscle loss and why strength training matters

25:23 Training for life: resistance + cardio, hybrid programming

28:18 ALS & MS: neurological causes of muscle wasting

31:01 See you at the Arnold: booth details

32:12 Wrap-up: where to follow KNKG


SUPPORT THE SHOW


If you enjoyed this bonus episode, you can support the show by:


Subscribing and checking out more episodes


Sharing it on social media (tag me — I will respond)


Sending it to someone interested in entrepreneurship or muscle health


FOLLOW ANDREW COATES


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https://www.andrewcoatesfitness.com


PARTNERS AND RESOURCES


RP Strength App (use code COATESRP)

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During setup, answer: How did you hear about us?

Type: ANDREW


KNKG Bags (15 percent off — DM for code)


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https://www.versagripps.com/andrewcoates


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Andrew Coates hosts Lift Free And Diet Hard, a conversation grounded in the belief that strength and wellness are built on more than just routines. This podcast moves beyond quick fixes to examine the principles and personal stories that shape a sustainable, intentional life. You’ll hear from a variety of inspiring guests who share not only their expertise but also the real-world challenges and triumphs they’ve faced. The discussions naturally weave together the science of fitness with the practicalities of daily choices, offering a nuanced look at what it means to truly care for your physical and mental health. Each episode is designed to provide actionable insights you can use to navigate your own path, fostering resilience and confidence whether you're in the gym or the kitchen. By focusing on informed decision-making over dogma, the Lift Free And Diet Hard podcast becomes a resource for anyone looking to cut through the noise of wellness culture. Andrew facilitates these explorations with a focus on empowerment, ensuring every conversation adds a layer of understanding to the complex journey of building a strong, healthy life.
Author: Language: English Episodes: 100

Lift Free And Diet Hard with Andrew Coates
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