The Runner's Playbook on Knowing When to Quit a Workout, Optimizing What Actually Matters, and Surviving Summer Heat — With NIKE Pro Coach Alex Osberg

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Alex Ostberg doesn't waste your time—and this month's Rundown recap is proof.

Dominic and Alex break down four newsletters that build on each other in ways that feel almost inevitable by the end: a framework for how elite programs fall apart, how coaches know when to pull the plug, and how summer heat can either wreck your confidence or become your secret weapon.

The first piece, "Stop Optimizing Things That Shouldn't Exist," starts with a pattern Alex sees repeatedly when collegiate athletes go pro: the blank slate they've been waiting for becomes a trap. More practitioners, more supplements, more inputs—and performance drops.

Someone has to own the whole system, not just be a piece in it. He calls it the difference between vertical and horizontal integration, and he believes coaches who act as master integrators (filtering what reaches the athlete) will always outperform those who don't. From there, Dominic and Alex get into "The Case for Quitting a Workout Early," a piece Alex traces back to his first day at the Bowerman Track Club, stopwatch in hand, with no script for when things went sideways.

The final two newsletters take on summer heat as a pair. "The Heat Tax" lays out the physiology—why humidity is the real enemy; why the brain throttles the legs before the legs even know what's happening. "The Heat Adaptation Playbook" closes with the practical protocol: post-exercise sauna, effort-based training targets, and the mindset shift that turns miserable summer miles into a fall advantage.

Same principles as the workout piece, Alex notes—protect the descent.

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