Exercise After Cancer Treatment: A Thriver's Guide to Getting Moving Again
The short version (TLDR)
Returning to movement after cancer treatment is rarely a straight line, and it is not supposed to be. The American Cancer Society points to roughly 150 minutes of cardio a week plus a couple of days of strength work, but for a thriver that number is a horizon, not a starting line. Start small, expect to rebuild the same ground more than once, and let consistency do the quiet work that intensity cannot. What helped me most was a few simple anchors: a clear goal, small wins worth noticing, and one person keeping me honest. Always clear new exercise with your care team first. They know your case.
Exercise is one of those words that either lights a fire or makes you sigh. When you are a cancer thriver, it carries more weight.
This is not about a smaller dress size or a summer body. It is about getting back something treatment took, on your own terms, at your own pace.
I came into my diagnosis as a runner who also biked and kayaked. Then treatment rearranged the whole picture, and I had to learn how to move through it.
Here is what that looked like, what helped, and how to start if you are at the bottom of this particular mountain.
Is it safe to exercise after cancer treatment?
For many thrivers, gentle movement becomes part of recovery, but the only person who can tell you what is right for your body is your care team, so start there before you start anything.
Chemo and radiation work like a sledgehammer, not a scalpel, and they take a toll on the healthy parts of you along with the rest.
My cardiovascular base took a nosedive. Things I never thought about, like a single flight of stairs, suddenly had an opinion.
That is why the care-team conversation comes first. What felt fine one week could be too much the next, and they can read that better than any blog can.
- Ask before you start, not after. New movement, new intensity, new anything. Run it by them.
- Expect your baseline to move. Some weeks your body says yes. Some weeks it says no. Both are normal.
- Rest is part of the plan, not a failure of it. You are still living life to the fullest.
What does the American Cancer Society recommend?
The general guidance is around 150 minutes of cardio a week plus two to three days of strength training, and for a thriver that is best read as a direction to walk in, not a test to pass on day one.
On paper it looks simple. Layered on top of treatment, appointments, and the work of finding a new normal, it is a real commitment.
So here is the reframe that helped me. The number is the horizon. The first ten-minute walk is the start line. Those two are allowed to be very far apart.
How do you rebuild cardio when treatment keeps knocking it down?
You rebuild it in cycles, accept that you will lose ground and gain it back more than once, and measure progress over months instead of days.
During my treatment I tried to keep running and lifting when I could. Some days I almost forgot I was in treatment. Other days, getting out of bed felt like climbing Everest, especially during the active chemo weeks.
In the off-weeks I worked to claw the cardio back, and could usually feel close to normal again by the next cycle. Then the next round would arrive and I would start the climb over. Rinse and repeat.
The hardest part was never a single workout. It was rebuilding the same stamina over and over, through a Minnesota winter, knowing the next cycle might undo some of it.
If that is your pattern too, you are not doing it wrong. That is the shape of the thing.
What about strength training if you have never liked it?
You can start absurdly small and still benefit, which is good news if dumbbells have never once sparked joy for you.
I am an endurance person by nature. Why lift weights when you can run, bike, or kayak. Strength training was uncharted territory, and I will not pretend I fell in love with it.
But resilience does not get built in the comfort zone. So I committed to it anyway, in small doses, and made my peace with not having to enjoy something to benefit from it.
A few honest starting points:
- Bodyweight counts. A sit-to-stand from a chair is strength training. So is a wall push-up.
- Light is the point early on. Every rep is a step toward a steadier you.
- Two short sessions beat one heroic one. Aim for something you will repeat, not something you will dread.
What actually keeps you consistent?
Consistency holds together when you give it a few simple anchors instead of relying on motivation, which comes and goes on its own schedule.
Dedication carried me on the low days. Consistency was harder, full of highs and lows where a light walk felt like too much.
Three things made the difference:
- Set a clear, small goal. A distance, a number of minutes, a single set. Something tangible to aim at.
- Celebrate the small wins. Every milestone, however minor, is proof of ground gained. Notice it.
- Find an accountability partner. One friend who knows your goals changes everything. Being cheered on is not a small thing.
And do not separate the physical from the mental. On the days when the fog rolls in or the emotional tank is empty, the simplest movement feels enormous.
Leaning on support, whether that is therapy, quiet, or just talking to someone who gets it, made staying consistent far less lonely.
Where do mushrooms and ODD BALLS fit into this?
They are a small supporting part of my own daily routine, nothing more, and they are not a treatment for anything.
I built ODD BALLS during chemo because I wanted real food with real extracts that I would actually reach for on the hard days. One ball a day, 750mg of Lion's Mane and Cordyceps, with the percentages printed on the bag instead of hidden in a blend.
One personal note, offered only as my own lived experience: somewhere along the way, my neuropathy quietly faded. I am not going to tell you why, and I am not going to dress it up as a cure. It is simply part of my story, the way I would tell a friend, not a promise of yours.
Your routine is yours to build. This is just one piece of mine.
Frequently asked questions
Should I exercise during active treatment or wait until after?
That depends entirely on your case, and it is a question for your oncology team, not a blog. Some thrivers move gently through treatment, some need to wait. Mine looked like running in the off-weeks and resting hard during active chemo. Yours may look nothing like that, and that is fine.
How soon will I feel like myself again?
For many thrivers it comes back in waves, not a straight line, often rebuilt across several cycles. Progress measured in months is still progress. Losing ground and regaining it is part of the shape of recovery.
What is a realistic first goal after treatment?
Something almost embarrassingly small. A ten-minute walk. A few sit-to-stands from a chair. Pick something you will actually repeat, then let it grow. Clear it with your care team first.
Do I need strength training, or is cardio enough?
General guidance points to both, but the order and intensity are yours to work out with your care team. If you are cardio-first like me, start strength small.
About the author
Jon Carter is the founder of ODD BALLS and a cancer thriver. An endurance runner before his diagnosis, he kept moving through chemo in the off-weeks, rebuilding his cardio cycle after cycle through a Minnesota winter. He started building real-food mushroom energy balls during treatment, and writes about movement, recovery, and the unglamorous truth that consistency beats intensity. Find more at oddballsfunguy.com.
