
Fuelin Sessions Why Running Is Lagging Behind In Fueling
Mar 26, 2026
Brian Rossetti, founder of V.O2 and creator of the Run Smart Project and VDOT calculator, is a former collegiate champion turned coach. He discusses applying Jack Daniels' training principles to personalize running plans. They cover balancing formulas with coach input, getting workout intensity right, why fueling lags in running, and practical carb strategies to boost session quality and recovery.
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Use A Coach To Make Training Precise
- Use a coach or a principled training system to save time and ensure training paces are correct.
- Brian Rossetti says V.O2’s formulas free coaches from calculations so they can focus on feedback and individualized adjustments.
Easy Runs Hurt Progress When Done Too Hard
- Easy runs done too hard undermine training specificity and cause overtraining.
- Rossetti built a workout accuracy 'bullseye' in V.O2 because athletes often push easy sessions for social kudos on apps like Strava.
Jack Daniels Ran A Dehydrated Marathon
- Jack Daniels once ran a marathon with almost no fueling and later admitted he was delirious from dehydration.
- Brian recounts Jack finished in 2:45 with no aid stations and felt ashamed for being a 'slow' marathoner then.





