Your Cardio Probably Doesn’t Suck

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Let’s clear something up right away.

Most people who say:

“My cardio is terrible.”

…don’t actually have bad cardio.

I know — bold statement from a gym that programs burpees recreationally.

After almost two decades of coaching, experimenting, tweaking programs, testing ideas on myself first, and permanently borrowing good concepts from smarter coaches along the way, you start to notice patterns in how athletes struggle with conditioning.

And interestingly, most athletes misidentify the same problem.

People tend to confuse three completely different limitations:

1. Poor pacing

2. Poor breathing awareness

3. Actually needing a bigger engine

Only one of those actually requires more conditioning.

And it’s usually not the one you think.

Understanding the Engine

Aerobic capacity — often described as VO₂ max — is your body’s ability to take in oxygen, deliver it where it’s needed, and use it to produce energy.

In simple terms:

How long you can keep working before your body decides it’s done negotiating.

But here’s the key distinction:

Aerobic capacity is your ceiling — not your pacing strategy.

You can have a massive engine and still drive it terribly.

Fitness isn’t just lungs working harder. Oxygen moves through an entire chain:

lungs → heart → bloodstream → muscle → mitochondria

If any part of that chain becomes inefficient, effort feels harder than it should — and athletes often assume their conditioning is the problem.

Problem #1: Starting Every Workout Like It’s the CrossFit Games

Pacing is one of the most misunderstood skills in group fitness.

You don’t pace a 10-second effort.

You absolutely pace anything longer.

Yet what happens in class?

3…2…1…GO —

Everyone immediately redlines like ESPN is filming.

Two minutes later:

• breathing chaos

• hands on knees

• staring into space questioning life decisions

Endurance coach Chris Hinshaw highlights a useful comparison between a runner’s 400m time and their 1-mile time.

• Elite endurance athletes slow only 6–8% between distances.

• General fitness athletes average closer to 21–22% slowdown.

That difference isn’t toughness.

It’s pacing awareness.

We see this constantly — athletes convinced they “need more cardio” suddenly survive workouts once they stop turning minute one into a sprint qualifier.

Signs pacing is your limiter:

• Round 1 hero, Round 4 survival mode

• First minute feels amazing, last minutes feel illegal

• You recover surprisingly fast after workouts

Fast recovery usually means your engine isn’t small — you just floored it too early.

Problem #2: Breathing Turns Into Panic Mode

One thing endurance coaches broadly agree on is that breathing under intensity is a skill.

It sounds obvious, but most athletes never actually learn how to breathe once effort becomes uncomfortable — they just try to survive it.

Efficient athletes develop breathing rhythms that stabilize effort and delay fatigue. Less experienced athletes often let breathing become reactive and chaotic as intensity rises.

When breathing loses rhythm:

• shoulders rise

• tension increases

• movement efficiency drops

• heart rate spikes early

You’re not out of shape.

You’re out of sync.

You need to be NSYNC.

Swish.

If your shoulders are touching your ears during wall balls, congratulations — you’ve unlocked panic breathing.

We regularly see athletes unintentionally hold their breath during lifts or cyclical work. The body interprets that as stress, and suddenly, moderate effort feels maximal.

Signs breathing is the limiter:

• Effort feels panicked early, not muscularly tired

• Talking becomes impossible immediately

• You calm down quickly once movement stops

Quick recovery is often the giveaway — the engine isn’t the issue.

Problem #3: You Actually Need a Bigger Engine

Now we get to real physiological limitation.

Endurance development happens through two main adaptations:

Central Adaptations

Improvements to heart and lungs — especially increased stroke volume, meaning more blood pumped per heartbeat.

Peripheral Adaptations

Muscles becoming better at using oxygen efficiently.

This includes increases in mitochondrial density — essentially adding more tiny energy factories inside muscle cells.

More mitochondria means your body produces energy aerobically longer instead of relying on emergency anaerobic pathways — the ones responsible for that familiar everything burns and I regret this feeling.

This is why rowing fitness doesn’t automatically transfer perfectly to running fitness.

Different muscles. Different oxygen demands. Different adaptations.

And here’s the honest part:

This takes months — sometimes years.

There is no spicy four-week engine upgrade.

You can fake intensity briefly, but fatigue eventually tells the truth about your aerobic system.

Signs you truly need engine development:

• Pace feels controlled but still fades

• Recovery between rounds worsens over time

• Heart rate stays elevated long after workouts

• Longer workouts consistently expose limits

• Fatigue carries into later training days

At this point, it’s not pacing or breathing.

It’s physiology asking for adaptation.

The Real Misunderstanding About Cardio

Newer athletes often assume experienced athletes just have better cardio.

Sometimes true.

But often they simply understand effort better.

They know:

• what sustainable actually feels like

• how breathing should sound

• when to back off early

• how to stay uncomfortable without panicking

They don’t go easier.

They just don’t go stupid early.

We’ve watched athletes improve conditioning without getting fitter at all — they just learned how effort should feel.

Same fitness. Better awareness.

Doing more hard workouts alone doesn’t automatically build an engine. Effective endurance training relies on intentional exposure:

• repeatable intervals

• controlled pacing

• structured rest

• measurable outputs

Rest isn’t quitting. It’s part of adaptation.

(Yes, even when you want to ignore the clock and keep suffering.)

What You Should Focus On Now

Before deciding you “need more cardio,” ask yourself:

• Do I actually know my sustainable pace?

• Can I control my breathing under effort?

• Do I understand effort gears?

If the answer is no, you don’t need more conditioning yet.

You need awareness.

And awareness improves much faster than physiology.

Engine development works best after awareness exists.

You likely need pacing practice if:

You start workouts hot and fade dramatically.

You likely need breathing work if:

Effort feels chaotic early.

You likely need engine training if:

Effort feels controlled but capacity still runs out anyway.

Different problems. Different solutions.

Same outcome:

Move longer. Recover faster. Stay dangerous deeper into workouts.

Final Thought

The best athletes in the room aren’t the ones going hardest at minute one.

They’re the ones still moving well at minute twelve.

An engine isn’t just built through suffering.

It’s built through understanding effort.

And that’s a skill we train every day.

Stay Dope.