If you were lighter, you’d be faster
One sentence from a coach ended Julia Casadio's skiing career. He wasn't a bad coach. He just didn't know what to say instead.
Coaching Professor with Dr. Paul Laursen
Coach. Scientist. Entrepreneur. Founder of Athletica & HIIT Science. Sharing science-backed insights on endurance coaching, athlete performance, and the future of AI in sport.
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Latest posts
Martin Buchheit Just Validated 15 Years of HIIT Science. On Himself.
A 47-year-old scientist straps himself to an electrical stimulator nine times. The data backs up 15 years of programming logic.
The Two-Pool Problem
What carbohydrate is actually doing in your body — and why the elite playbook probably doesn't apply to you.
When Systems Meet Scale
Why Athletica Was Built as a System, Not an App: The Computational Sports Science LAB
I Trained Hard. It Still Wasn’t the Answer.
A performance scholarship for athletes who know there has to be a better way.
Sports Science 3.0: From Knowing More to Choosing Better
Why the next era of coaching won’t be defined by data, dashboards, or AI hype, but by better decisions.
Your Training Is About to Change: Inside Athletica’s New AI Coach, HRV Engine & New Athletica Interface
A first look at Athletica’s new AI coach, new interface, and Athletica U – plus a deep-dive podcast for your next long ride.
Learn Endurance Training by Doing and Living with Athletica U
Train Smarter by Feeling First: Why We Built Athletica U
HRV + Resting HR + Well-Being: The Winning Combo
Now Shown in Cyclists—and Already Live in Athletica
What It Takes To Win an Ironman as an Age-Grouper?
The case study, the science, and the practical takeaways for your own training.