Redefining Fitness When Your Body Has Different Rules

Written by J.T. Oden

As a kid, I wanted to be an action hero.

Not in the metaphorical sense. I wanted the whole package.

I wanted to move like Bruce Lee. I wanted the discipline of Batman. I wanted the athleticism of the Teenage Mutant Ninja Turtles. Looking back, that last one may have been an ambitious goal considering I never found that vial of ooze, but the dream was there.

Like a lot of kids, I was fascinated by strength, speed, and the idea of pushing past your limits. Every movie, cartoon, and comic book seemed to send the same message: if you work hard enough, train hard enough, and want it badly enough, you can become stronger.

The problem was that my body had read a different script.

Growing up with Sickle Cell Disease meant that I learned very early that effort and outcomes didn't always have the relationship people assumed they did. I couldn't simply train harder every time I hit a wall. In fact, trying to push through limitations often made things worse.

I would get inspired, start a new workout routine, convince myself that this time I was going to stick with it, and then inevitably overdo it. Before long, I'd find myself dealing with a pain crisis that reminded me—in no uncertain terms—that my body operated under a different set of rules.

For years, I viewed that reality as failure.

I thought fitness was something I kept getting wrong.

The fitness world often celebrates phrases like "No pain, no gain," "Push through it," and "Train harder." For some people, those ideas can be motivating.

For someone like me, they can also be terrible advice.

Sometimes pain isn't “weakness leaving the body”.

Sometimes pain is your body sending an urgent email marked HIGH PRIORITY.

The Problem with Traditional Fitness Advice

Most fitness advice is designed for people whose bodies are relatively predictable.

You set a goal.

You follow a plan.

You increase the intensity.

You achieve results.

Simple.

Except it isn't simple when your body can change the rules overnight.

People living with chronic illnesses/conditions often deal with factors that traditional fitness programs don't account for:

• Fluctuating energy levels

• Chronic pain

• Mobility limitations

• Recovery periods that are longer than average

• Medication side effects

• Medical complications

• Unpredictable symptom flares

When you're dealing with those realities, consistency doesn't always look like showing up five days a week. Sometimes consistency looks like adapting. Sometimes it looks like resting. Sometimes it looks like recognizing that today's version of success is different from yesterday's.

Understand, that isn't quitting. It's strategizing.

For years, I treated my body like an opponent. I thought fitness was a battle of wills. If my body said stop, I'd try to negotiate. If my body said slow down, I'd argue. If my body said absolutely not, I'd see that as a challenge. 

My body usually won those arguments.

Pain crises have a way of ending debates.

The lesson I kept resisting was that fitness isn't supposed to be a fight against your body. It's supposed to be a partnership with it. That sounds simple.

It took me years to understand.

Then Came the Stroke

As if Sickle Cell Disease wasn't enough of a challenge, life eventually added another complication.

I survived a stroke.

At one point, my left side was paralyzed.

There's something profoundly humbling about losing abilities you once took for granted.

Movements that typically require no thought suddenly become significant milestones.

The experience forced me to reevaluate everything I believed about strength.

Before the stroke, I associated strength with performance.

How much can you lift?

How far can you run?

How hard can you push?

After the stroke, strength looked very different.

Strength became patience.

Strength became persistence.

Strength became celebrating progress that other people might not even notice.

Strength became refusing to give up on a body that felt unfamiliar.

Fitness Isn't One Thing

One of the most harmful myths in fitness is the idea that there's a single correct version of it.

We tend to picture fitness as intense workouts, gym memberships, personal records, and dramatic transformation photos.

But fitness is much broader than that.

Fitness is simply improving your ability to navigate your life.

For some people, that means running marathons.

For others, it means walking to the mailbox.

For someone recovering from paralysis, it may mean regaining movement.

For someone with chronic pain, it may mean maintaining mobility without triggering a flare.

The goal isn't to match someone else's definition of fitness.

The goal is to improve your own quality of life.

The Difference Between Challenging Yourself and Punishing Yourself

This distinction changed everything for me.

Challenge can be healthy.

Punishment is not.

A challenge says:

"I believe I can do a little more."

Punishment says:

"I should be able to do more."

One comes from curiosity.

The other comes from shame.

Many of us with chronic illnesses spend years feeling like our bodies have betrayed us. It's easy to internalize the idea that we're lazy, weak, or not trying hard enough.

But self-punishment has never been an effective fitness strategy.

Learning to respect limitations doesn't mean surrendering to them.

It means understanding them well enough to work with them.

What Fitness Looks Like for Me Now

These days, my relationship with fitness is less dramatic and much more sustainable.

I still value movement.

I still want to maintain strength.

I still want to improve where I can.

But I no longer measure success solely by intensity.

Some days are good days.

Some days are not.

Some days my left hip decides it has opinions.

Strong opinions.

Unhelpfully strong opinions.

I've learned that progress isn't erased because I need to rest.

Movement counts.

Stretching counts.

Physical therapy counts.

Recovery counts.

Listening to your body counts.

The scoreboard is a lot bigger than I once believed.

A Different Definition of Strength

As a kid, I admired superheroes because they seemed unstoppable.

As an adult, I think strength looks different.

Strength is adapting when life changes the rules.

Strength is trying again after setbacks.

Strength is rebuilding.

Strength is learning your limits without allowing them to define you.

Strength is choosing consistency over ego.

And sometimes strength is having the wisdom to stop before your body makes that decision for you.

If your body operates under different rules, you're not failing fitness.

You're playing a different game.

One that requires creativity, patience, flexibility, and resilience.

Honestly, that's a lot closer to being a superhero than I realized when I was a kid.

Final Thoughts

For a long time, I thought fitness was about becoming the person I imagined I'd be growing up.

The martial artist.

An action hero.

Someone who never had to think twice about what his body could handle.

Life had other plans.

Sickle Cell taught me that pushing harder isn't always the answer.

A stroke taught me that progress can look very different than we expect.

Chronic pain continues to remind me that adaptation is an ongoing process.

But somewhere along the way, I stopped measuring fitness by how closely I matched someone else's journey.

I started measuring it by how well I could live mine.

And that's the definition I wish more people understood.

Fitness isn't some never-ending

perfect health, perfect mobility, or perfect bodies. Fitness is simply the ongoing process of caring for the body you have—even when it's complicated, unpredictable, and occasionally determined to keep you humble.

Especially then.