What I Learned Sitting KneeToKnee with a Guy Who Had It All and Still Burned Out - with StreTch Rayner
- kneetoknee

- 5 days ago
- 3 min read

I've had a lot of conversations on KneeToKnee. Most of them leave me thinking. This one with StreTch Rayner left me feeling like I needed to get right to the gym.
StreTch is a personal trainer and health coach based in Australia. He's the kind of guy who walked away from a corporate computer science career because it felt hollow, built a gym in London with over 300 members, genuinely loved his work, and then ran himself straight into the ground doing it. Chest pain. Anxiety. Chronic fatigue. Couldn't sleep. And he was a personal trainer, which, as he put it, meant the irony wasn't exactly subtle.
The Problem with Being a Health Expert Who Ignores His Own Health
What struck me first about StreTch's story is how easy it is to rationalize your way through decline. He was surrounded by fitness. He knew what to do. He was doing it. And still, something was badly off.
When he finally went to a functional medicine practitioner and did a deep dive on blood work and genetics, what came back wasn't what he expected. Mercury toxicity. Hemochromatosis. A detox gene variant called MTHFR. Histamine intolerance. Things that weren't showing up on a standard checkup, and that no amount of training or clean eating was going to fix on their own.
The sauna cleared the mercury. Donating blood twice a year brought his iron down. Cutting high-histamine foods calmed his gut. In about six weeks, he said, he felt like himself again.
Why Healthy Food Was Making Him Sick
This part of our conversation I keep coming back to. StreTch has histamine intolerance. And some of the most nutrient-dense foods on the planet, bone broth, slow-cooked meats, sauerkraut, cooked tomatoes, are also high in histamine. For most people, those are great foods. For StreTch, they were quietly causing gut problems.
The fish oil thing was even more surprising. He was taking it consistently because everyone in the fitness world says you should. It's anti-inflammatory. It's omega-3. But fish oil comes from fish, and fish carry mercury, and if your detox pathways don't work the way they should, you might just be slowly storing what you're trying to supplement your way to health with.
He's not saying fish oil is bad. He's saying your body is individual, and what works for someone else might not work for you. And the only way to actually know is to look under the bonnet.
The Warrior to King Shift
StreTch introduced a framework that I think a lot of men in midlife are going to recognize in themselves. He talks about masculine archetypes, specifically the shift from warrior to king.
The Warrior is the energy that drives most men through their 20s and 30s. Go to university. Get the career. Earn the money. Fight for everything. Push harder. The warrior is valuable. He gets things done. But at some point, the warrior gets tired. And if you don't shift out of that mode, you end up burning out, or worse.
The King is something different. More leadership. More alignment. More intention about what actually matters and why. Less reacting, more choosing. It's not about going soft. It's about going wise.
That hit home. I'm not a guy who sits still very well. I like to move. I like to push. And StreTch is essentially saying that the pushing eventually has to get directed by something deeper than ambition.
The One Thing He Left Me With
At the end of every KneeToKnee episode I ask the same question: what's the one thing our listeners can do to build deeper connections with those around them?
StreTch's answer surprised me a little. He didn't say call a friend. He said get to the gym and start picking up weights.
His reasoning? He's seen it over and over with the men he coaches. When you start training and you see something change, physically, mentally, whatever it is, you start asking better questions. You start wondering what else you could do. What if I changed my diet? What if I got better sleep? What if I actually reached out to that guy I haven't talked to in two years?
Strength, he says, is the gateway habit. And I believe him.
I made a commitment on this episode. When I get back from my trip, I'm getting to the gym. And StreTch is expecting me to report back. And as of this writing, I am back at it, working towards those better questions.
Now so are all of you.
If you want to find StreTch, head to tstmethod.com. And if this article and the episode was useful, share it with someone who might need to hear it.
🎙️ KneeToKnee — connection that compounds. https://youtu.be/liBeisx3S54
📩 Get The One Thing — a weekly note from Mark every time a new episode drops: https://bit.ly/4eIs6gf



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