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Endurance Essentials · Jul 27, 2026

The Gambler

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Gordo Byrn · Endurance Essentials

My buddy, KP, punching a world, and two Ironman, champions out the back with a surprise attack at Epic Camp New Zealand.

Birthdays can be a time of increased mojo for many of us. The most powerfully motivating birthdays are often the tens, 30 years old, 40 years old, 50 years old and beyond.

When KP turned 50 he was super stoked to put in a big year of racing. His mindset was he needed to get his results before it was too late. It worked, it was the fastest he ever raced. Then his life became difficult. At the time, I shared an observation with him, that I want to pass along to you…

If your mental health depends on being able to do a lot of exercise then never, ever, ever take any action that might jeopardize your ability to train.

KP on the Ironman Brazil podium.

Watching Kev age up into the 50-54, and across the years that followed, I want to share hard-won experience that will help you achieve a lifelong enjoyment of sport.

Are you familiar with the sunk cost fallacy?

Sunk cost fallacy is the tendency to continue investing time, money, or effort into something simply because we’ve already put resources into it—even when it’s no longer the rational choice.

  • In my day job (investing) the sunk cost fallacy costs people millions.

  • In sport, the fallacy can cost us everything - ie our health.

The most common error is sick, injured or burnt out athletes racing because they signed up.

If you love an athlete then always encourage them not-to race when they are sick, injured or burnt out.

I have friends that, once they commit family money, feel obligated to race regardless of their readiness. In a couple months, burnt-out athletes will line up on the start line in Kona.

The older we get, the more that attitude will cost us.

My friends all crave just-one-more. Heck, I crave one more too. One more usually has something to do with Kona or World Champs.

  • I write articles,

  • I encourage people to race short,

  • I point out that there is nothing at the finish line…

…and still we continue.

Here is a checklist you can share with a friend who’s past the Limit.

Just before your health completely falls apart, you will be able to tick-the-box on many of these:

  • Sleep disturbances.

    • The start of a self-reinforcing negative loop.

  • Soreness that doesn’t clear.

  • Injury, even seemingly accidental.

  • Elective orthopedic surgeries.

    • The mental trap is thinking surgery will be the solution so we can return to a lifestyle that is causing chronic breakdown.

    • I had a friend who surgeon-shopped until they found someone willing to operate. Multiple surgeries didn’t fix the problem because the issue was lifestyle, not orthopedic.

  • Fat gain

  • Suppressed hormone and out of normal range blood markers.

  • Increased use of alcohol and drugs, including pain killers & anti-inflammatories.

  • Breathlessness at (formerly) easy paces.

Automatically generated transcript. “Doing a thing” is “doing nothing.” I’ve been on the wrong side of the Limit and it feels just like Sam Laidlow describes. One of my “strengths” was my “lack” of mental toughness. I would lose a month, rather than three. On top of the paralyzed feeling, I would have hunger that wouldn’t clear despite eating lots (mainly toast and ice cream).

One of the challenges with elite sport is we are often up against people who would do anything for victory. You’ll hear this theme with many elites when they talk about the end of their careers. The risks inherent in sport, and the lifestyle required to perform, were not worth it, anymore.

Remember, you are participating for fun and we are playing a game.

To help people break free of a pattern that is damaging their health, I ask them to describe their future life.

  • Where are you trying to get to?

  • What are you trying to create?

  • Is this current approach effective?

I’ve had friends (and readers in my DMs) agree then postpone the decision - to the winter, to the end of next season, to just after the next build… be careful with that. The warning signs (above) are an indication that you’re beyond the limit.

We are playing a long game and I’d like to keep you on the team.

If you’re unsure then print a copy of the checklist and talk it over with a trusted confidant. It’s OK to choose a different path.

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Link to The Tired Athlete

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