Issue archive

Past briefings, organized for real trail decisions.

Each issue starts as an email, then becomes a public reference page readers can return to before a training block, gear choice, or race.

Latest issue

Heat adaptation: free fitness or easy way to cook yourself? — how to use heat safely before a summer trail race without wrecking training quality.

Carbon trail shoes on technical terrain — speed tool or expensive wobble board?

Fueling above 60 g/hour — how to test high-carb fueling without turning your gut into the limiter.

Downhill is not free speed — how to train descents without mistaking easy breathing for low load.