I’ve spent most of my career looking for the edge of what’s possible in medicine. Whether it’s a new imaging modality or a breakthrough in molecular biology, there’s something genuinely exciting about seeing tangible proof that we are moving the needle for people.
But new research has got thinking about a tool we’ve had all along - one that doesn't require an expensive drug or a regulatory overhaul, yet we often treat it as an afterthought: Exercise.
A growing body of research, including studies highlighted by the American Society of Clinical Oncology (ASCO) and Cancer Health, is showing how vital exercise is to improving cancer patient outcomes. They address something that feels incredibly personal to anyone who has navigated a diagnosis: the crushing weight of Cancer-Related Fatigue (CRF).
It’s a conversation worth leaning into because it’s where our traditional clinical blueprint often fails the individual.

The "Rest" Fallacy

For decades, the standard recommendation for someone going through the toxicity of cancer treatment was simple: Rest.
We viewed the patient through a lens of fragility. We assumed that because the body was under attack from both the disease and the cure, the best thing to do was to power down. We told people to wait, and to preserve their energy.
But for a patient, "rest" doesn't always feel like recovery. When you’re sitting in that thin paper gown, fatigue isn't just being tired - it’s a bone-deep, heavy exhaustion that sleep can’t fix.

Exercise as Clinical Intervention

This new research shows us that the most radical thing we can do for a patient’s trajectory isn’t to encourage passivity, but to prescribe agency.
Walking - gentle consistent, moderate movement - is one of the most effective tools we have to fight back against that clinical fatigue. In one study (Guillermou et al.), those who moved didn't just "feel better," their condition actually improved.
This isn’t about "fitness" in the aesthetic sense. It’s about biological intent. When we move, we aren't just burning calories; we are signaling to our nervous system and our metabolic pathways that we are still in the fight. We are reducing systemic inflammation and increasing our tolerance for the very treatments designed to save our lives.

What this means for the N of 1

We often talk about healthcare in terms of the "average." We look at the statistics and the broad protocols. But care doesn't happen at the average; it happens at the N of 1.
If we know that regular walking can mitigate the biological markers of fatigue, then we have to stop treating exercise as "lifestyle advice." We have to start seeing it for what it is: A clinical intervention.
To ignore the power of movement is to ignore a tool that has the potential to improve outcomes as much as the pharmacopeia in our cabinets.
The current system is often framed around efficiency and throughput - surgery, infusion, radiation, discharge. It’s a well-oiled machine that can easily skip over interventions you won’t find on a spreadsheet.
But true care is human. At the end of the day, we aren't just treating a diagnosis; we are caring for a person with a history, a family, and a future.
If we are brave enough to prescribe a drug with a hundred toxic side effects, we must be brave enough to prescribe the intentionality of a 20-minute walk. We need to build a model of care that doesn't just ask, "How do you feel?" but empowers people to reclaim their own biology.
Technology and medicine are the co-pilots, but the individual is the pilot of their own journey.
Let’s stop prescribing fragility and start prescribing the momentum that comes from taking that first step.
Because no matter how advanced our treatments become, they will never replace the power of a person reclaiming their own strength, one step at a time.

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