Live
What VO₂ max is—and what wearables are estimating
The single number that gets thrown around most in this project, and the gap between a lab test and a watch guess.
Zone 2 without the mythology
What "easy pace" actually does physiologically, and where the internet-fitness version overreaches.
Coming soon
Planned, not yet produced. Each will follow the same structure as the two above — one-sentence answer, evidence, uncertainty, sources — and won't publish until it can meet that standard.
Why resting heart rate can be useful and noisy
Where a low number earns its reputation, and where it's just noise.
Marathon fitness versus longevity fitness
Training for 42.2 km and training for a long healthy life aren't quite the same target.
What body-composition tests can and can't tell us
What a bioimpedance scale is actually estimating, and where it guesses.
Why endurance training might affect muscle and strength
What an aerobic-heavy block might cost a lifter, and why.
Blood glucose in active people
Where the “exercise cures blood sugar” claims hold up, and where they don't.
Heat, hydration, and training in Singapore
Why an easy Singapore run doesn't feel easy.