Human Endurance
Human Endurance
Bruna and Fabi
Marginal Gains for Competitive Age-Groupers with Mikael Eriksson, Founder of Scientific Triathlon, Host of That Triathlon Show | Expert Series 17
1 hour 32 minutes Posted May 3, 2026 at 12:56 pm.
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What separates an age-grouper who keeps improving from one who plateaus? It often isn't the next training method or the latest gadget. It's how they think about their training as a whole.

In this episode, we sit down with Mikael Eriksson, founder of Scientific Triathlon and host of That Triathlon Show. With nearly nine years of full-time coaching experience and an engineering background, Mikael takes a systematic, pragmatic approach to triathlon training that has helped athletes go from beginners to professional level.

We talk about how to profile athletes by their physiological strengths, why specificity is overrated for long-course racing, and the three metrics every coach should master: external load, internal load, and RPE.

Mikael also shares his philosophy on hard work in an era obsessed with recovery optimization: "You can become a pretty good athlete with very bad recovery if you're putting in the work. You cannot fully optimize your recovery and become a good athlete if you're not putting in the work."

If you're a competitive age-grouper looking for the right levers to pull, or a coach refining how you work with experienced athletes, this conversation offers a grounded, practical framework rather than a list of hacks.

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