What if aging didn't have to mean decline? At 60, Dr. Brad Cooper is running a real-world experiment on himself: can he match—or even beat—his marathon and Ironman finish times from over a decade ago, without medications or TRT?

In this episode, he lays out the data behind the "1% per year after 40" drop-off, why he's not willing to accept it as inevitable, and the two races that will put the theory to the test—the California International Marathon and Ironman Texas. He also shares the first hard lesson training in your 60s has already taught him.

Whether you're an endurance athlete, an aging competitor, or someone who's been waiting to start something of your own, this is your invitation to stop blaming age for every setback—and to run your own experiment.

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No gym membership. No equipment. No trainer. No lab. Just four simple movements and a formula that gives you a clear, objective snapshot of the two physical markers most closely linked to longevity, cognitive function, and quality of life in the second half of life.

In this episode of Not Done Yet!, Dr. Brad Cooper introduces the Personal Performance Quotient — a free, self-directed assessment built around strength and cardiovascular fitness that you can do anywhere, repeat two or three times a year, and use to track whether you're trending in the right direction. The best part? It doesn't matter where you're starting. Because this one is you versus you — and nobody else.

The four components are straightforward: push-ups, pull-ups, a 5K, and a plank. Dr. Cooper walks you through exactly how to calculate your score, what it reveals about where your gap lives — strength or endurance — and why zero pull-ups and a walked 5K are not just acceptable starting points, they're honest ones.

This episode pairs directly with the "Shifting the Algorithm" episode on the 1%/year muscle loss statistic. Together, they give you both the why and the how for pushing back against "all things being equal."

The formula: (Push-ups + Pull-ups) ÷ (5K time in minutes − Plank time in minutes) = Personal Performance Quotient

Topics covered: fitness test for people over 50, VO2 max, strength training after 50, push-up test, 5K fitness, plank test, personal performance quotient, measuring fitness in midlife, longevity and exercise, muscle loss after 40, all things being equal, cardiovascular fitness, functional fitness over 60, health metrics second half of life, not done yet, self-assessment fitness, midlife fitness baseline, physical health tracking, strength and endurance balance

Here is article that provides alternatives to the 5K along with examples for how to calculate your Personal Performance Indicator.

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You've heard the statistic: after 40, we lose roughly 1% of our muscle mass every year. Most people hear that number and quietly accept it — as if decline is simply what happens. But here's what almost nobody mentions: the four words that follow that stat in the research. Four words that change everything: "All things being equal."

In this episode of Not Done Yet!, Dr. Brad Cooper unpacks exactly what it means to refuse that condition — and how to shift your personal algorithm from passive decline to active ascent. Whether you're 45 or 75, the science is clear: it is never too late.

You'll hear about the Catalyst Cornerstones (Move, Fuel, Rest, Connect) — the high-return fundamentals hiding in plain sight while everyone chases the latest hack. Beyond that, Dr. Cooper dives into Tier II strategies including strength training, optimal protein intake, and an honest look at creatine and alcohol. For those ready to go further, he covers the Mastery Pursuits — interval training, plyometrics, and the functional mental toughness framework (fMT) that ties it all together.

This episode is for anyone in midlife or life's second half who refuses to let "all things being equal" be the final word on what's possible.

Topics covered: aging and muscle loss, strength training after 50, protein intake for older adults, creatine and cognitive function, interval training, plyometrics, sleep optimization, mental toughness, functional fitness, life's second half, healthy aging, midlife performance, not done yet

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Reach out anytime with questions or ideas - Results@CatalystCoaching360.com

Tap into the BetterPath Substack series on unlocking life's second half here.

Access industry-leading, nationally board certified health, wellness & high performance coaching for yourself or your team here.